|To have XP display the error message instead of rebooting:|
1. Click Start, and then right-click My Computer.
2. Click Properties.
3. Click the Advanced tab, and then click Settings under Startup and Recovery.
4. Under System failure, click to clear the Automatically restart check box.
5. Click OK, and then click OK.
A 'Repair' install might fix the problem. It will remove all the Microsoft updates. That 'might' be a good thing, because if you haven't made any changes to your system, it's 'possible' that one of the auto updates caused the problem.