There are several reasons your computer will freeze, but here are the most common factors and solutions: Firstly, try pressing the Ctrl+Alt+Del keys simultaneously, then release quickly, to open up the Task Manager window. Select the program that is not responding, and click "End Task " to close that application. If this unfreezes your computer, then proceed to the following info. If it doesn't work, then proceed to the more aggressive solutions at the very bottom in addition to the following info:
*DRIVER INCOMPATIBILITY: Driver updates are NOT enough, especially for gamers. Having a driver compatibility issue is MAJOR reason for freezes. If you are a gamer, then there are specific video and audio drivers that are recommended for certain games. Having the wrong version of these drivers could lead to your computer freezing. You'll have to check that you have all the necessary drivers for each game. To do this, simply refer to your game's prerequisite drivers, then make sure you have them; if not, buy them. For free assistance through MS, visit the Solution Center, which can help detect which drivers you need with installed games: http://support.microsoft.com/select
*SYSTEM ERRORS: Generally, after long time use (sometimes even in new PCs), your PC collects junk, compiles disk volume errors, bad sectors, lost clusters, cross-linked files and directory errors, and other things that clutter your PC and cause it to run slow and freeze. A great solution that is automated and FREE is Microsoft 'Fix It", also known as Microsoft Automated Troubleshooting Services. I recommend you run it and if it finds problems (which I'm sure it will), then it really does "fix it", automatically! Visit: http://support.microsoft.com/fixit
*OVERHEATING: One of the biggest reasons for a computer freeze is because there is a hardware component that is getting too hot and causing a failure. Try to buy a fan for your PC to keep it's components cool HERE:
FOR DESKTOPS: http://www.amazon.com/USB-Mini-Desktop-Fan-Black/dp/B003FO0LG6/ref=sr_1_1?ie=UTF8&qid=1287363412&sr=8-1
*MORE AGGRESSIVE SOLUTIONS TO THE MORE AGGRESSIVE ISSUES*
*RECENTLY INSTALLED SOFTWARE: If new software is incompatible with your operating system, then this will cause your PC to freeze. Either install a compatible version, (if installed incorrectly, uninstall then reinstall that version from another source) or if not available then you will have to uninstall it and find an alternative to it. You can run a check with Windows Compatibility Center to see if you have any software that conflicts with your version of Windows HERE: http://www.microsoft.com/windows/compatibility/Default.aspx
*INSUFFICIENT RAM: RAM (Random Access Memory), the capacity to store data and run different applications and hardware, has it's limits. Try to have at least 20% free and your computer may stop freezing. If you're a gamer, be sure to have dedicated graphics memory. Check your memory with Windows Diagnostic tools HERE: http://oca.microsoft.com/en/windiag.asp
*MALWARE: Modern viruses, malware, trojans, rootkits and spyware are more sophisticated than ever. All it takes is one click and your computer can become unresponsive! I would suggest running a check with these powerful and free antispyware and antimalware/rootkit software: Super AntiSpyware AND Malware Bytes for antispyware/malware/rootkit/browser hijackers. Then use AVG for Anti-Virus. Get them HERE free:
SUPER ANTI-SPYWARE: http://download.cnet.com/SuperAntiSpyware-Free-Edition/3000-8022_4-10523889.html?tag=mncol;1
MALWARE BYTES: http://download.cnet.com/Malwarebytes-Anti-Malware/3000-8022_4-10804572.html?tag=contentMain;contentAux
AVG: http://download.cnet.com/AVG-Anti-Virus-Free-Edition-2011/3000-2239_4-10320142.html?tag=contentMain;contentAux
*REGISTRY ISSUES: Commonly accumulated unwanted junk files and invalid and broken shortcuts are a huge reason for cluttering disk space and freezing your PC. The software below will help that and offers tools to manage start-up programs and memory optimization, PLUS a government-standard file shredder to securely delete data in my faves below. I like Glary Utilities AND Advanced System Care Free. They are, ALL free software and are top rated: Visit:
GLARY UTILITIES: http://download.cnet.com/Glary-Utilities/3000-2094_4-10508531.html?tag=mncol;lst
ADVANCED SYSTEM CARE: http://download.cnet.com/Advanced-SystemCare-Free/3000-2086_4-10407614.html?tag=contentMain;contentAux