pc keeps restarting

shaikha123

Reputable
Oct 20, 2014
2
0
4,510
Dell studio. windows vista intel core2 quad

Using Facebook and pc restarted and has been doing so continously. Sometimes gets to page where you can select f2 or f12 and sometimes restarts before that.
More like powering down first and rebooting within seconds.
The furthest its got is beginning to load windows startup repair and powers down before it has loaded.

Any help please?
Many thanks