Strange Freeze and black screen

Badiux

Honorable
Jul 27, 2013
13
0
10,510
I randomly get these freezes where monitors turn to "no signal" for about 4 seconds then i get a black screen, if i trry to restart the pc from the restart button it wont post it will give a 5 beep code, shutting the pc down via psu cable or power button and then starting it up again it will act as normal.
I'm thinking the psu might be gone/going
As for specs Phenom2 965be
Asrock Xtreme 3
Sapphire 7850 2gb
Some no name psu (rasurbo or something)
8gb DDR3 (corsair Vengeance)
So ....could it be the psu or something else?