The “STOP: C0000221” error is a big problem for Windows XP computers, causing 1,000’s of machines to restart every day. This has been an issue for some time, and is actually very simple to fix if you know how. This tutorial will show you exactly what’s wrong with your system (that causes this error) and how to fix the problems that cause the issue.
The main cause of the STOP: C0000221 error is corrupted and damaged drivers on your PC. Drivers are the link between the hardware of your system and are very complicated programs. It’s vital that the drivers of your computer are working smoothly otherwise all sorts of errors can be caused. Having outdated or corrupted drivers is a big problem for XP and is the main cause of this error. To fix it, you should go to the website for the various components of your PC… or the main website of the manufacturer of your laptop / desktop… and the download all their latest drivers.
This can take a while but you need to make sure that you have all the latest drivers for your system. You could also use one of the “automated driver update tools” that are out on the Internet now. These tools are highly effective at updating all your drivers at once and can save a lot of time and effort.
If that does not work, you should then try a system repair for Windows. This is where you basically perform a “repair installation” for your computer and get Windows to replace any of the damaged or corrupted system files that might be causing the error. You need to use your XP installation disc for this process and is very easy to do.
After that, you should also run an antivirus scan to make sure that there are no viruses affecting your computer. Many people find that they have lots of hidden viruses that latch onto important system files and stop your computer from working. This is a big problem which can be fixed by using an antivirus program to scan through your system and fix any of the damaged or corrupted infections that are inside your PC.
You should also run a registry check to see if the registry is running well. Registry cleaners are software tools which scan through the registry and remove any of the damaged or corrupted settings which could cause the STOP: C0000221 error. Using a ‘registry cleaner’ will prevent this from being a problem, as it will be able to find and remove the errors that are causing your PC to crash from inside the registry.