System shutting down randomly with no errors / blue screens

JLawL

Honorable
Jan 28, 2013
37
0
10,530
Alright, long story short, about a week ago I came here asking about my power supply, because I assumed that since my computer was acting as if the power had just suddenly gone out, that it had to be that.

Well, tonight, rather than the computer shutting off completely, I only lost my video. Still had audio, and upon restarting the system got a CMOS error. So now I'm wondering if it may be the motherboard or possibly my video card.

I'm using a Phenom II 1100T at stock speeds with an MSI motherboard and a 6770 video card. Nothing amazing, but it is thoroughly cooled. Nothing even feels warm, let alone hot.

I have run memtest, ran furmark to max out my video card for an hour, tested the hard drives, and no matter what I do I cannot reproduce it. Then, when I'm doing something simple like browsing facebook, it will just shut down with no warning.

Its been happening every 2 or 3 days for a couple weeks. Is there anything else I can try? I've already ordered a power supply, but now that I also lost video and got a CMOS error I'm starting to worry it may be something else.