Computer randomly shutting down.

[lkjubea12]

I built my girlfriend a computer about 3 or 4 months ago, and it has recently begun to randomly power itself off and restart. When it powers off there is no blue screen, no windows shutting down message it just instantly turns off and reboots. Could this be a power supply problem?

 

[M0j0jojo]

check the power button on the case, it might be pressed to hard and probably got stuck in which its sending the signals to reboot

 

[lkjubea12]

I thought about this also, it seems to be fine, even the reset button is fine.