Update: Ultimate Links - Windows Restarts without Warning

Software Error

Errors generated by software programs can cause a computer to reboot unexpectedly or without warning. If you are running Windows XP see the below section "For Windows XP users" before continuing.

If you are not running Windows XP or following the below steps still cause your computer to reboot without warning. Boot your computer into Safe Mode, and let the computer run in Safe Mode.

If the computer is still rebooting in Safe Mode the error is likely not software related but something else, skip to the next section. If the computer is not rebooting in Safe Mode it is likely you have software related error.

Note: Automatic Restart in Windows Xp, is a process to protect from hardware failure if it is caused by a Software/Driver Error.

For Windows XP users

Windows XP is designed to automatically reboot each time an error occurs such as a Blue Screen of Death or BSoD. Although this may be nice for errors that do not occur often, users who have a re-occurring error may wish to identify the error to troubleshoot it. Below are the steps on how this feature can be disabled and enabled in Windows XP.
From the desktop right-click on My Computer.
Click the Properties option.
In the System Properties window click the Advanced tab.
In Advanced click the Settings button under Startup and Recovery.
In the Startup and Recovery window uncheck the Automatically restart check box.
Click Ok.

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