If you've ever used Windows, chances are you've experienced the lovely shade of blue associated with the famous Windows Stop Error or 'Blue Screen of Death.' This frequent, although less so in newer operating systems, error occurs whenever Windows senses a software, hardware or driver error which will not allow it to continue operating properly. In other words, it happens all the time, for all sorts of reasons.
Often, if you're lucky, the problem will resolve itself with a simple reboot and you may never have to worry about it again. More typically though, the BSOD is a harbinger of trouble and you may find yourself faced with another and another until you throw up your hands... but all is not lost.
A quick patch update to Windows can extend the useful life of a PC. To take the fear out of Upgrading Windows 98 to Windows XP, rely on this guide. - PCSTATS Tips