Not really, 1 DVD drive and 1 HDD. One thing I have noticed is the blue LED lights on PSU fan have gone much dimmer since I plugged in new GPU. I dont think the PSU is failing it seems like it does not have enough power but it's 850watts so it should?? a little confused by it all to be honest lol.
Yeah, 850W should be enough... try undervolting them and see if that fixes it?
Sounds like a PSU issue though. The temps on that card are not ideal, but it shouldn't be causing a shut-down...
AFAIK, you should see the GPU go "SICK" or "DEAD" in CGMiner before it would ever cause a complete PC shut-down.