How to Synchronize Your Computer Clock with an Online Time Service

in Internet
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For the ultimate in time accuracy, set up your Windows PC to synchronize its clock to the official time kept by the U. S. National Institute of Standards and Technology (NIST), also known as the Internet Time Service.

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How to Revert Back to Internet Explorer 7

in Internet
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Some people who upgraded their Internet browser to Internet Explorer 8 are regretting the decision, as the newer version from Microsoft uses more memory and reportedly has bugs that still need to be worked out. Fortunately, it’s a simple process to revert back to IE7 (if that’s the last browser you used), or to download and begin using an alternative browser.

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Building Your Own Home Server

in computer hardware
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For many reasons, you may want to build your own home server. You can put together your own server, customized to your specific storage and networking needs, thanks to barebones kits that are easy to assemble.

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How Do You Make a Password Protected Zip File?

in privacy & security
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It’s become much easier to create a password-protected .zip file, thanks to advances in Microsoft Windows. After you compress the file, double-click on the zipped folder and choose “add a password” from the menu. You can remove it later, if you know the password.

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Dealing with the Error: rundll32.exe is not a valid win32 application

in privacy & security
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The error message “rundll32.exe is not a valid win32 application” is bad news for your computer, as it means that malware has infected your computer, replacing a valid file with a malicious one. Anti-malware programs may fix it, but you might end up having to wipe the hard drive.

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A Quick Look at Apple’s Quick Look Technology

in Macintosh
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Quick Look is a cool feature in Apple’s OS X 10.5 that allows Mac users to preview almost any file type with a single key command. Quick Look doesn’t open the files, but rather brings up a window (usually in the Finder) so you view them, or, in the case of MP3s and videos, play them.

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When Windows XP Shuts Down Very Slowly

in applications
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If Windows XP is shutting down very slowly, it could be that your registry is cluttered with invalid settings. Clearing up the registry and reducing the time before open applications are “killed” should solve the problem.

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What You Should Know About the Conficker Virus

in privacy & security
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The Conficker virus or worm is still a threat, despite failing to live up to the worst fears on April Fool’s Day 2009. You can find out if you have Conficker, get rid of it and learn how to protect your computer in the future.

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Changing What Program Opens a File by Default in OS X

in applications
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You don’t have to go through several steps to open the file of your choice, when Mac OS X allows you to simply right-click on a file and open the Get Info dialog box to access the “Open With” options.

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How Can I Avoid Putting Electronic Garbage in Landfills?

in computer hardware
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It’s bad for the environment, not to mention illegal in many cases, to dispose of your old, unwanted computer in a landfill. Fortunately, computers’ parts can be recycled, and in many cases a nonprofit can refurbish the computer for use by schools or other needy organizations.

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How to Create a Bootable Windows Rescue CD

in data storage and recovery
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You can create, or even order ready-made, a Windows Rescue CD that will allow you to boot from the CD drive instead of your main hard drive. If your PC crashes, you’ll be glad you did.

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