* Right click on My Computer and Click Properties
* Click on settings of System and Recovery.
* Remember this place is you can configure what the system will do when it gets into system failure.
* Just check the check box which says Automatically restart
Now the next time your computer goes for a system failure it will auto restart. But You will have to wait for the dumb to get created. Moreover you can also check for Overwriting the old dump file in case you want to save some space.