If it’s late XP Shutdown PC ?

1. Many reasons may be more than the PC Shutdown lately. This may be due to a special setting of windows XP
2. These settings are not correct, go to Start menu, Run type in secpol.msc click be Ok
3. The Local Security Settings Local Policies Security Options and select the right within the very bottom of the Shutdown: Clear Virtual Memory Page file double-click on Open. If you select Enabled in the Disable Apply, Ok and come back again .Now it’s over .Now you computer get shutdown quickly. Best of luck