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Troubleshooting Your Computer

Written by oneself on 4:10 AM

by roger.

If you’re going to be building computers, adding devices to your computer, altering BIOS settings, or just installing and deleting programs on your computer, then you’ll want to learn the basics of troubleshooting. You might notice that I didn’t say computer troubleshooting. That is because troubleshooting is an independent skill. I learned to troubleshoot as an electronic technician. And most of those same techniques work fine for troubleshooting computers.


Troubleshooting is really a kind of detective work. If you notice, the TV detectives spend a lot of time asking questions and thinking over the facts. And that is where a good troubleshooter starts, asking questions, not with tearing apart their computer, swapping components, or running diagnostics programs.


My intent here isn’t to give you heavy technical troubleshooting instructions, but to provide you with common sense techniques that will likely save you a lot of time and trouble if you follow them.


Take note: I am assuming a basic to intermediate knowledge on the part of the computer user for this article. In other words, that you either build computers or add components to it, like hard drives or CD drives. I also assume you have a basic understanding of the boot process. Finally, I assume you know basic electrical safety rules.


A Typical Scenario


Let’s say one evening you turn on your computer and it starts, seems to boot fine, but stops dead at the point it should start loading Windows. What now? You panic of course. Like most of us you haven’t saved copies of your most important documents for months. And since Windows isn’t loading from the hard drive, you “logically” assume there is a serious problem with the hard drive. It must be physically broken or the data is scrambled.


Since you’re in panic mode you tear the hard drive out of your other working computer and try to boot the first computer. The same thing happens, it stops at the point of loading Windows. What a relief, at least the problem isn’t with the hard drive, your data is safe - there is probably a fault with the motherboard in the first computer.


To make sure, you test the hard drive from your first computer (the one that wouldn’t load Windows) in your second computer, it works fine. That confirms it, there is a problem with the motherboard on the first computer. Probably the hard drive controller, you think, being the expert.

source:www.pcmech.com

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Microsoft Office Training for Office 2007

Written by oneself on 12:19 AM

by Christine Harrell

Many businesses are upgrading their older versions of Microsoft Office to Office 2007. Microsoft has made some fundamental changes to the interface and functionality of the software suite and some users may have trouble with the transition.

Revised interface The most obvious change in Office 2007 is the new ribbon interface. Menus are gone, replaced with toolbar-like "ribbons" that group command icons in categories such as "Insert" or "Review." Many have found these new ribbons to be more intuitive by putting any command just a couple of clicks away. Many of the commands have keyboard shortcuts displayed putting them even closer to the user.

Whether or not the ribbon interface is more efficient than the old menu interface, it still takes time for new users to find all of their commands. For example, an Excel user might be frustrated when not finding "Insert Cells" on the Insert menu, not realizing it's on the Home menu where the most common commands are stored.

Office 2007 supports keystrokes from older versions of windows. Using the previous example, a user might reflexively type Alt-I (to call up the old Insert menu) followed by R (for Insert Row). Excel 2007 will dutifully insert the row. This can make the transition easier, but it also leaves users depending on outdated commands.

Training in such a program helps your employees learn to navigate the new interface quickly. This not only improves their productivity, but also reduces their frustration and their resistance to using the new version of MS Office. Training gives them confidence and makes the transition to the new interface a snap.

New features New users often overlook features of applications because if they don't realize a feature exists, they don't know to look for it. They may not realize that the "Document Inspector" allows them to remove hidden metadata such as personal information that they may not want shared with the document's recipient. They may not know they can mark a document a final, automatically preventing anyone from making any future changes to it. They may not know about the countless other new features that make their jobs easier.

An MS Office course can educate your employees about all the new features in Office 2007. Employees will find new ways to use Office applications that were impossible before, such as the use of digital signatures to create paperless and secure contracts with Microsoft Word.

MS Office training is cost effective Each day of training can replace dozens of hours of lost productivity. Employees will be confident in their use of the new applications, navigating the revised interface with ease. They will discover features that make them more accurate and more productive. A small investment today will provide huge returns in the future. The best solution would be to get your employees started on some sort of MS training program. There are many online and offline classroom courses available.

About the Author

Author is a freelance copywriter. For more information on Microsoft Office training, visit http://www.MicrosoftTraining.net/.

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Vista Prone to Hacking?

Written by oneself on 4:08 AM


Philip Nicosia

Can it really be possible? Windows Vista, the newly released operating of Microsoft, is vulnerable to hacking? Yes, you heard it right. It is possible, according to Microsoft itself. Well, it appears that an audio podcast has the capability of hacking Windows Vista’s speech recognition feature. By using recorded audio commands, hackers can run malicious programs.

Based on an initial investigation conducted by Microsoft, Vista’s speech recognition feature can allow an attacker to execute commands verbally on a user’s computer. The commands, however, are limited to the rights of a certain logged on user. Any commands on the administrative level will be barred by the User Account Control.

Microsoft explains that the hacking can done when the user has a microphone and speakers connected to his or her computer with the speech recognition feature configured. Once these exist, the audio file of an attacker could issue verbal commands through the system’s speakers which could be executed by the speech recognition feature. With this flaw, it is possible for a podcast or any other audio file for that matter to delete documents of a Vista user and empty the trash. Users are advised to disable speech recognition within Vista.

Microsoft assures its customers that it is continuously looking into the issue and will provide more guidance to protect them. To avoid this attack, Vista users are advised to take several steps. First is to turn off their computer speakers and microphone. The next thing to do is to close the Windows Media Player, turn off the speech recognition feature and restart the computer if the user runs an audio file that tries to execute commands on their system. A user can disable speech recognition by going to the speech recognition options and unchecking “run speech recognition at startup.” While there, a user can also disable the default speech profile for the system. This is to avoid the risk of outside voices and noise being recognized as valid for input instead of the user’s own voice.

The recent launching of Microsoft Vista is the biggest ever in the history of Microsoft. It was the grandest launch because of the introduction of both a new Windows and Office operating system. It came five years after Windows XP was introduced. This early, Microsoft officials foresee that Vista will be accepted by people faster compared to other Windows operating systems. For the first two years, the firm expects to sell approximately 200 million copies to businesses and consumers around the world. Vista features unique graphics including 3-D icons and folders with the so-called transparent glass effects. The launch of this new upgrade, originally named Longhorn, had been postponed several times as Microsoft took extra efforts to make sure that Vista will be fully secured from more complex and high-tech Internet attacks.

Microsoft Vista comes in four versions with advanced interface and security tools. To be able to run the system, you will need a minimum of an 800MHz processor, 512 RAM and a hard disk with a 15GB capacity. The firm also guaranteed that Vista will benefit gamers and game developers apart from businesses and regular consumers.

Podcastblaster is a site specializing in all aspect of podcasting and provides an extensive podcast directory covering many topics including technology podcasts.


Source: http://www.articlealley.com/article_189044_11.html

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Windows Vs Mac OS Vs Linux

Written by oneself on 9:30 AM

By Andrew Horner

A few weeks ago I heard a quite amusing summary of Windows, Mac OS and Linux, it read something like this; “Linux is for developers, Mac OS is for GFX designers and Windows is for playing solitaire!”. Now, as you’re reading this, the chances are very great that you are using Windows as your OS. In fact, is estimated that 93% of all computer systems in the world are running Windows of some form. Only 4% are using Mac OS and around 3% using Linux.

Everyone knows Windows has weaknesses, and maybe a few too many of them. A few being; BSOD, driver compatibility issues, slowness and crashes , vulnerability to viruses and all the other ones that are too numerous to list. Mac OS and Linux do of course have their downsides, but the most critical problem with these is compatibility. The inability to run your favourite programs on Mac OS or Linux can be infuriating.

Linux is mostly known as a symbol of open source software, being free and available at all times, with dedicated programmers from around the globe working hard to ensure that the most popular distributions are running smoothly and securely. And in reality this is true and has been for many years now. Linux’s key to stability and security is the fact that it’s open source, allowing anyone to find bugs or security holes. However, with Windows and Mac OS this is not possible, as their source code is protected by copyright laws.

Another Linux advantage is it’s epic stability and uptime, making it a primary choice for network administrators to use on servers. Some servers have been known to run constantly for 9 months to 1 year without a single reboot.

Mac OS is commonly used among graphics designers, due to it’s flexibility and the various tools that are offered only on Mac OS.

Fortunately Mac OS offers the same stability as Linux, combined with Windows’ user friendly atmosphere, making it a good choice for intermediate and advanced computer users.

It has often been said that Windows’ only advantage is the fact that so many developers program for Windows OS, and because so many people use Windows, game developers target their games at Windows users. Windows’ popularity can be down to it’s simple to use interface which is almost idiot-proof, making it a more practical choice for less technical users.

However large the advantages of Linux or Mac OS are, people will continue to use what is offered to them, which is 92% of the time, Windows. Therefore developers will target their programs at the most popular OS, Windows. This makes people more stuck to Windows…and so the cycle continues. Will it ever break?

Article Source: http://EzineArticles.com/?expert=Andrew_Horner


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Windows Run Commands List

Written by oneself on 5:50 PM

by: Brian Walker

Here are a list of Run Commands that can be used in Windows

Arp Displays/modifies ARP IP address/eth_addr entries
Asd Automatic skip driver upon windows startup program
Attrib Displays/changes file attributes
Calc Calculator
Cdplayer Plays music CDs on your CD-ROM drive
Cfgwiz32 ISDN Configuration Wizard
Charmap Character Map
Chkdisk Repair damaged files
Cleanmgr Cleans up hard drives
Clipbrd Windows Clipboard viewer
Clspack Lists/creates listings of system packages
Cmd Opens a new MS windows (2000 & XP)
Command.com Opens a MS-DOS Window
Control Displays Control Panel
Cvt Convert FAT16 hard drives to FAT32
Cvt1 Converts drives from FAT16 to FAT32
Convert C: /fs:ntfs Converts drive from FAT32 to NTFS
Dcomcnfg DCOM user security
DCPromo Promotes Windows Server to a Domain server
Debug Assembly language programming tool
Defrag Defragmentation tool
Deltree Deletes an entire directory tree
Diskcopy Copies the contents of one floppy disk to another
Drwatson Records programs crash & snapshots
Dxdiag DirectX Diagnostic Utility
Explorer Windows Explorer
Extract Extract files from Microsoft *.CAB files
Fc Compares two files for similarities
Fdisk Partitions hard drive
Find Searches for a text string
Finger Display user information on a system running the finger service
Fontview Graphical font viewer
Format.com Formats a disk
Freecell Card game
Ftp ftp program
Grpconv Program Manager group converter
Hh Windows Help
Hostname Returns Computer's name
Ieshwiz Customize folder appearance
Iextract Internet Explorer backup information extraction tool
Ipconfig Displays IP configuration for all network adapters
JviewMicrosoft Command-line Loader for Java classes
Label Change the name of a hard drive or floppy disk
Mem Display detailed system memory information
Minmine Minesweeper game
MMC Microsoft Management Console
Mkcompat Program Compatibility Wizard
Move Moves a file/directory
Mplayer Media Player
Mscdex Dos mode CD-ROM driver
Msconfig Configuration to edit startup files
Mshearts Hearts card game
Msinfo32 Microsoft System Information Utility
MSimn Starts Outlook Express
MSMSGS Starts MSN Messenger
Mspaint Starts Paint
Nbtstat Displays stats and current connections using NetBios over TCP/IP
Net Displays Microsoft Networking info
Netstat Displays all active network connections
Nlsfunc Loads country-specific information
Notepad Basic text editor
NslookupReturns your local DNS server
Packager Object Packager
Ping Sends data to a specified host/IP
Progman Program Manager (Win3.1)
Protman Netbind/ Protocol manager
Quikview Quickview image files
Rasdial Dial and connect to a remote access server or dissconect a connection
Rcp Copy files to and from a computer
rexecRun commands on remote host running the rexec service
Regedit Registry Editor
Regsvr32 Register/de-register DLL/OCX/ActiveX
Regwiz Registration wizard
Route Set up routes on your network
Runas Run commands as a specified user
Scandisk Scans drives for file/disk errors
ScandskwScandisk to fix file/hard drive errors
Scanreg Scans Windows registry
Scanregw Scan/repair & backup registry
Scanreg /restore Restores Registry to a previous good configuration
Script Windows scripting host
SetdebugActiveX debugging for JAVA
Sfc System File Checker - 98
Sfc /scannow System File Checker - XP
Sndrec32 Sound Recorder
Sndvol32 Volume control for soundcard
Sol Solitare card game
Srw System Recovery Wizard
Start Runs a Windows or DOS program
Subst Associates a path with a drive letter
Sulfnbk Backs up Windows long (over 8.3 format) filenames
Sys.com Copies system startup files to a disk
Sysedit Edit system startup files (config.sys, autoexec.bat, win.ini, etc.)
Taskman Task manager
Tcmsetup Telephony client setup
Telnet Telnet program
Tlocmgr Telephony Location manager
Tracert Traces and displays all paths required to reach an internet host
Tuneup Maintenance scheduler & wizard
Vcmui Version conflict manager
Winfile File manager (Win3.1)
Winipcfg Displays IP configuration
Winpopup Pop-Up Messenger for Windows Networking
Winword Starts MS Word
Write WordPad text editor, can read Word 6.0 files
Wscript Windows Scripting Host for running VB scripts
Wupdmgr Takes you to MS Windows Update
Xcopy Copy files

Management Consoles

certmgr.msc Certificate Manager
ciadv.msc Indexing Service
comexp.msc Component services
compmgmt.msc Computer management
devmgmt.msc Device Manager
dfrg.msc Defragment
diskmgmt.msc Disk Management
fsmgmt.msc Folder Sharing Management
eventvwr.msc Event Viewer
gpedit.msc Group Policy
iis.msc Internet Information Services
lusrmgr.msc Local Users and Groups
mscorcfg.msc .Net configurations
ntmsmgr.msc Removable Storage
perfmon.msc Performance Manager
perfmon.msc RSoP - Resultant Set of Policy
secpol.msc Local Security Policy
services.msc System Services
wmimgmt.msc Windows Management Instrumental

Windows Environment Commands

%ALLUSERSPROFILE% Open the All User's Profile
%HomeDrive% Opens your home drive e.g. C:\
%UserProfile% Opens you User's Profile
%HomeShare% Opens your Home Folder on the server (domain only)
%temp% Opens temporary file Folder
%systemroot% Opens Windows folder

source:searchwarp.com

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Windows or Linux, What Are the Differences?

Written by oneself on 6:46 AM

by: Dougal Kay

Linux and windows differences


The two main operating systems employed by the PC owner are windows and Linux. Although they appear very similar on the face of it there are fundamental differences in the two operating systems.

A major advantage with Linux is the price, it is completely free! Windows can be very expensive.

There are enormous differences in the way that they behave at a technical level, but I suspect what you really want to know is how they differ from the perspective of an end user.

The vast majority of people will know how to use a windows operating system. This is mainly due to the fact that every PC sold usually has the Microsoft operating system installed and the mighty Microsoft has a mighty marketing budget. The Linux marketing budget is miniscule.

The main differences in operating systems:

  • Linux is open source, free under GNU, Windows is a licensed os.
  • Windows is developed by Microsoft, a single huge entity. Whereas Linux has many distributors such as red hat, mandrake etc.
  • Linux is more secure than windows in the case of virus, worms etc.
  • Linux works on both GUI & Console mode but windows only GUI.
  • Linux has multi-user, multitasking, multiprocessing, multiprogramming features.
  • Linux code is open source and as a result it has been tweaked and tweaked to perfection by millions of users doing it as a hobby.
  • Linux was developed from the UNIX operating system, Windows is a completely unique entity.
  • Windows security is password based, the Linux system is secured with access rights.
  • Windows file names aren’t case sensitive, Linux are.

  • After reading these points you may be asking yourself why everyone isn’t using the Linux system. To put it simply, the Linux system requires a lot more technical knowledge both to install it and to maintain it as an operating system. Software that is written for windows will not work on Linux and as such it is much more difficult to buy off the shelf applications.

    Microsoft’s Windows is often the best option for most people because of the required technical knowledge with Linux. It’s just good to know that there is a free alternative to Windows.

    Steven owns and runs an online computer store that sells hardware and Computer software to the UK.

    source:searchwarp.com

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    How to Reinstall Windows Without Losing Your Data

    Written by oneself on 4:44 AM

    Over time, Windows loses stability. If you keep a computer for more than two years, at some point you're going to have to bite the bullet and reinstall Windows from scratch. But contrary to popular belief, you won't have to reformat your hard drive (with one exception, discussed below). The bad stuff you need to get rid of is all in your Windows folder.

    Before you begin, gather your Windows and application CD-ROMs. Back up your data files (just to be safe), and then clear two days off your calendar. If everything goes smoothly, you can reinstall Windows in a few hours. But you have to assume something will go wrong: You may not be able to find a necessary CD, or data won't be where you thought it was, or something will simply refuse to work.

    There's a difference between a repair reinstall and a complete reinstall. Though a repair (also called a refresh) will let you keep your current settings, a complete reinstall will give you a truly fresh version of Windows. Repairs are fast and easy, but they don't fix anywhere near as many problems. The instructions below are for total reinstalls, except where noted.

    source: about.com

    Your Vendor's Restore CD

    Most computers ship with a vendor-specific restore CD rather than with a Microsoft Windows CD-ROM. (If your PC came with a Microsoft Windows CD, or if you bought a retail copy of Windows, skip to the section for your version.)

    Some restore CDs give you all the options of a full Microsoft Windows CD, but with better instructions and the convenience of having all the right hardware drivers. Others can do nothing except reformat your hard drive and restore it to the condition it was in when you bought the PC. (This case is the exception I mentioned above that requires a reformat.)

    If your restore CD is reformat-only, back up your data files to a network or a removable medium before reinstalling Windows. If you use Windows 98 or Me, back up C:\My Documents, plus the folders inside C:\Windows discussed in the 98/Me section below. If you have Windows 2000 or XP, back up C:\Documents and Settings. Also back up any other folders in which you store your data files.

    Windows 98 and ME CDs

    These Windows versions keep some important data inside your soon-to-be-erased Windows folder, so you need to copy several of its subfolders to another location. Right-click My Computer and select Explore. Double-click the C: drive icon (in Me, you may then have to click View the entire contents of this drive). Right-click in the right pane and select New, Folder. Name the new folder oldstuff.

    Go to the Windows folder (you might have to click View the entire contents of this folder), hold down Ctrl, and select the following subfolders: All Users, Application Data, Desktop, Favorites, Local Settings, Profiles, SendTo, and Start Menu. If you don't see them all, select View, Folder Options (Tools, Folder Options in Me), click the View tab, select Show all files, and click OK. (If you still don't see them all, don't worry about it.) Press Ctrl and drag the folders to C:\oldstuff (see FIGURE 1).

    Restart Windows with a start-up disk in your floppy drive. (To make a start-up floppy, insert a disk, select Start, Settings, Control Panel, double-click Add/Remove Programs, click Startup Disk, Create Disk, and follow the prompts.) At the Startup Menu, select Start computer with CD-ROM support. While the drivers load, insert your Windows CD-ROM.

    Unless you're doing a repair reinstall, type the command c:\windows\command\deltree /y c:\windows and press Enter. Deleting your old files could take time, but the /y switch suppresses confirmation prompts, so take a break.

    When you're back at the A: prompt, type x:setup, where x is your CD drive letter (it's likely one letter past what it usually is in Windows, so if it's D: in Windows, it's probably E: here). Press Enter and follow the prompts.

    Once you're back in Windows, reinstall your graphics card driver. If you have Windows set up for more than one user, you'll also have to re-create each account. Select Start, Settings, Control Panel, Users to do so. It's important that the user names match those in the old installation. If you're not sure, open Windows Explorer and navigate to C:\oldstuff\profiles. There you'll find a folder for each registered user name (see FIGURE 2). Don't worry about passwords. Log off and log back on as each user. When you're done, log off and back on one more time, but instead of choosing a user name and a password, press Esc to enter Windows without being a specific user.

    Select Start, Programs, MS-DOS Prompt (in Windows 98) or Start, Programs, Accessories, MS-DOS Prompt (in Windows Me). Type xcopy c:\oldstuff\*.* c:\windows /s /h /r /c and press Enter (if you want to know what the xcopy switches do, enter the command xcopy /?). When xcopy asks if it should overwrite a file, press a for All.

    When xcopy is through, reboot and log on (as a particular user, if necessary). Open My Documents to make sure all your personal files are where they belong, including your Internet Explorer favorites and your custom Start menu shortcuts.

    Now skip ahead to "Finishing the Job."

    Windows 2000 and XP CDs

    Boot your computer with your Windows CD-ROM inserted. When you get the 'Press any key to boot from CD' message, do so. (If you don't see that message before Windows starts, restart Windows, press the key you're prompted to enter for your PC Setup program, and change the boot order so your CD drive is first.)

    At the 'Welcome to Setup' screen, press Enter. The R (repair) option takes you to the Recovery Module, which is useful if Windows won't boot, but it's no help with a reinstallation. Soon you'll be told that there's already a Windows installation on the computer. Press r for a repair reinstall or Esc to begin a complete, destructive one. For a complete restore, select your C: partition and press Enter. When you get the warning that says an operating system is on that partition, press c. When you are asked your partition preference, select Leave the current file system intact (no changes). When you're told that a Windows folder (or Winnt folder for Windows 2000) already exists, press l ('ell') to delete it and create a new one. Follow the series of prompts. When the installation program asks for your name, enter temp.

    Once the installation is complete, your system will reboot into Windows, and you'll be logged on as user Temp. If the screen is difficult to read, reinstall your graphics card driver.

    If you are reinstalling Windows XP, skip to "For Both Windows XP and 2000."

    If you're reinstalling Windows 2000, log off as Temp and back on as Administrator. Now log off and on again, this time as Temp. Open Windows Explorer and navigate to C:\Documents and Settings. One of the subfolders will be named Administrator. Another will be named something like Administrator.computername.

    Select Start, Programs, Accessories, Command Prompt. Type cd "\documents and settings"Enter. Then type xcopy administrator\*.* administrator.computername /s /h /r /c, replacing computername with the last part of that folder's name (after "Administrator.") in Documents and Settings. Now press Enter, and when you're asked about overwriting files or folders, press a for All. and press

    If you have any users on the old installation besides Administrator, continue with the "For Both Windows XP and 2000" section. Otherwise, open Windows Explorer and make sure your data files are where they belong. Then go to Control Panel's Users and Passwords applet and delete the user Temp before skipping to "Finishing the Job."

    For Both Windows XP and 2000

    Reopen Windows Explorer. Select your C: drive (you may have to click Show the contents of this folder). Right-click in the right pane and select New, Folder. Name the new folder oldstuff. In the left pane, choose the Documents and Settings folder. It should have subfolders for each user from the previous install, plus one for Temp and a few others. Move the folders for your previous user names to oldstuff.

    Select Start, Control Panel, User Accounts (Start, Settings, Control Panel, Users and Passwords in Windows 2000). Create an account for each user who was registered before the reinstall. Be sure to use the exact names. They are the same names as the folders you just moved to oldstuff (as shown in FIGURE 2). In Windows XP, at least one user must have administrator privileges.

    Log off and back on as each user, before logging back on as Temp. Make sure that you select Log Off and not Switch User at Windows XP's Log Off dialog box (this isn't an issue in Win 2000).

    Log on as Temp, select Start, Programs, Accessories, Command Prompt (in XP, Start, All Programs, Accessories, Command Prompt), type xcopy c:\oldstuff\*.* "c:\documents and settings" /s /h /r /c, and press Enter. Press a when asked if you want to overwrite a file. Log off Temp and log on to each restored account to make sure everyone's documents and data are where they belong. Log on as an administrator and run Control Panel's User Accounts applet again to remove the user Temp.

    Finishing the Job

    Now you've got Windows going, but not much else. You may have to reinstall your printer, sound card, and so on. Luckily, if a driver for the gadget came on your Windows or vendor restore CD, it was probably reinstalled automatically.

    You'll have to reinstall your applications to reintroduce them to Windows. Some of their settings will not be changed by the reinstallation, but those that were stored in the Registry were wiped out.

    Once your Internet connection is running again, browse to Windows Update and download all critical updates for your version (see FIGURE 3). Then visit the sites of your hardware vendors to update your drivers.

    After the reinstall, some of your data may not show up where it should. Search for it in both your Application Data and oldstuff folders, and see if you can move it to the folder in which Windows or your apps are looking for it. If you find a folder called Identities with two subfolders whose names are long and indecipherable, try moving the contents of one to the other and see if your data reappears.

    You've probably guessed that the final step is deleting the c:\oldstuff folder--and the Administrator folder in Windows 2000. Make this the very last step, however. Wait a couple of days, weeks, or even months until you're confident that all of your needed files are accessible.

    Send your questions to answer@pcworld.com. We pay $50 for published items. Click here for more Answer Line columns. You'll find Contributing Editor Lincoln Spector's humorous writing at www.thelinkinspector.com.

    More on Sudden Reboots

    Reader Robert Mazzeo of Royersford, Pennsylvania, points out that the "Sudden Reboots" tip in my July column missed three common causes of sudden computer reboots. A bad power supply, a faulty video card or driver, and a failing RAM chip are often the source of these boots out of the blue. Also, if you follow the column's suggestion to use a can of compressed air to clean out your computer's insides, wait at least 2 hours before turning your system back on.

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