BSOD a couple of times, now artifacts on games only

Jtom2015

Honorable
Aug 21, 2013
24
0
10,510
My computer has been running solid up until now, I updated the lated nVidia driver for GTX 780, but I didn't notice any problems then and when I restarted, a few days later the power went out, I then have to re-overclock the CPU, yet I up the wrong thing giving me the BSOD, I then put it back down to normal, and shut it down and started it up and it worked fine for a few days, now I am beginning to get some artifact when I play games, I have set it back to the previous nVidia driver as of this moment, I just would really like some help to fix this seeing as I spent a lot on my computer.

Original Build: 3/21/12
SPECS:
CPU: AMD Phenom II X4 980 @3.7Ghz @4.00Ghz Is what it's normally overclocked to; 2 years
RAM: 16Gb of 1333Mhz DDR3 4 4Gb ram sticks; first 2 ram sticks are 2 years, rest are 3 months
GPU: EVGA GTX 780 3Gb GDDR5; 2 months old
HDD: 500Gb Hybrid drive, 8Gb for OS, the rest for storage; 2 years old
HDD2: 2Tb storage drive @7200RPM; 1 year old
MOBO: Asus Sabertooth 990FX; 2 years old
PSU: 600W Corsair Gaming PSU, 21 months old; I know its low for my system, but I don't have billions of dollars to just get a new one as long as it works, although I am looking to be getting a new one soon, any suggestions on that would be welcomed as well.
 

Jtom2015

Honorable
Aug 21, 2013
24
0
10,510
I ran it for 2 hrs and 47mins with no problems, fps was stable, and everything else was running fine. Its only for games that I get problems, I'm typing this out on the computer right.
 

Jtom2015

Honorable
Aug 21, 2013
24
0
10,510
Unfortunately, I only have one computer in my house even relatively powerful enough to run it, and it happens to be the one I'm having problems with