Your clients or even your own computer may keep restarting for no reason without warning. First of all, when a computer keeps rebooting it can be caused by a wide range of problems, from in compatable software such as Firewalls and Antivirus software, damaged or overheating parts inside your computer or even in compatable peripherals such as printers and scanners. Here are some computer repair tips to help you diagnose the problem.When a reboot occurs from within Windows XP, your computer will totally restart without telling you what caused it.
This is the default behavior when Windows XP encounters a system failure.
To see what the error was you can change the default behavior by right clicking on “My Computer” and choosing “Properties”. Goto the “Advanced” Tab and under “Startup and Recovery” press the “Settings” button.