Computer problem

[taylorxr]

I have built a computer about 5 months ago, and today my computer twice all ready randomly shut off without warning. Can someone tell me whats going on.

my specs-
xfx 750i mobo
core 2 quad q8200
corsair ddr2 mem- 800 mhz
diablo tech 550 watt ps
evga gts 250

Fans
1 120 mm
6 80 mm

 

[Outlander_04]

shuts off like you pulled the power plug out of the wall?

then your power supply is probably overheating . The fan might not even be turning