You should try using MSCONFIG in Windows XP to disable some of the unnecessary programs that automatically load on start-up. Disabling these programs will help your computer boot faster and crash less.
1. In Windows XP, go to Start > Run
2. Type MSCONFIG in the "Open:" box and then either press enter on your keyboard or click on the OK button.
3. This launches Microsoft's System Configuration Utility. Click on the Startup tab (the tab at the far right).
4. This takes you to a page with a list of "startup items." Startup items are programs that are automatically loaded every time you turn on your computer. Some startup programs are absolutely necessary, others are simply a waste of RAM.
Remember, disable only those programs that you recognize and don't need to have running all the time. When in doubt, leave it on.
5. Click on the OK button.
6. A message will pop up telling you that you must restart your computer before these changes will take effect. Click on "Yes" and your computer will automatically reboot.
7. That's it! Your computer should now boot faster and crash less.
And you should also update your Antivirus software and run a virus scan,
If the problem persist contact support http://www.unlimitedtechnicalsupport.com