pc shut itself and cant do anything when 10 minutes gaming and 10 secs furmarking

avesta256

Commendable
Aug 25, 2016
2
0
1,510
so the problem began when i was playing dota for 20 min, then my pc suddenly goes blank screen while the power led on my case blinking, the monitor says have no signal from my pc, then i tried to restart my pc by pressing reset button and try to force shutdown by holding the power button for 10 secs, but both methods has no luck, my pc wont restart neither shutting down, it stays on but blank screen with power led on my pc case blinking.. then i unplug the power cord to force it to shutdown, i turn on my comp again and try to do furmark, 5 secs after i started furmarking my pc back to "comatose" state again.. any idea what happened to my pc? it never happened before

my spec :

fx 4300
msi 760gm p-23
club3d r9 270
seasonic s12g 450w
corsair veng 12gb