The worst thing a person can do when trying to fix their PC is to try and fix it without the help of a reliable program called an "AppLocker cleaner". This program is a utility designed to repair your PC without removing any files. AppLocker is like a "fixer upper" and it will fix your problems in various ways. One way it will fix problems is by checking if your system has any old, unused or even orphaned files that you have not used for quite some time.
It is important that you can run the system cleaner on a regular basis to ensure that the system stays up to date and you can always download new applications from the internet. Because the problem with XP is not limited to just the applications that you use on the computer but it's also the unused files that you have saved from the applications that you use and not used for a long time. You might have saved a file, because you had a need to use it at some point. However, you need to be very careful when deleting it and this is why you should not just delete all of the unused files from your PC as you do not know what might be lurking in there waiting to come back to haunt you.
When you need to clean up your system, use the utility to remove all the orphaned or old applications that are running in the background without you knowing about them. If you are able to use the tool to get rid of these corrupted applications then you will save yourself a lot of time when cleaning up your system. If you cannot use the tool to get rid of the orphaned applications then you might as well go for a cleaning solution that will not require you to scan your system manually as AppLocker does.