Open System Properties via Start > Control Panel > Performance and Maintenance > System [ System Properties may also be opened using the WinKey+Pause key combination ] Select the Advanced tab and then click Settings in the Startup and Recovery section In System Failure section, clear the checkbox next to Automatically Restart Click OK and OK to exit Now you should be able to see the error message when windows crashes. Post the message here for further help.
Hi it still restarts. It went on a blue screen this time. I'll tell u the full story, i replace all the components including mobo, cpu, graphics and psu. but the HDD remain the same with the same OS installed.