Aha, now that's interesting:
**Please double check this with your PSU specs.**
According to CoolerMaster website, the MAX continuous power is 350W!!! It seems that CoolerMaster is deceiving;
on Newegg, the 430W model only supplies 400W continuous, 430W peak!
Check specs
here
Also, by looking at pics, it mentions something about MAX 5.5V, 3.3V, and 12V at 330W and 5.5V and 3.3V MAX at 210W.
(And I don't know if this was an issue with older video card models, but the 12V line ONLY supplies 16 Amps...I do know that newer cards require at least 18 Amps... but maybe this isn't an issue.)
Please look at your actual PSU labeling and see what the MAX outputs are to see if your PSU is also an issue...
Honestly, you only have a 350W PSU, and although I do not know what the Pentium D uses, you could be maxing out... I read somewhere on these forums that undervoltage could kill your components...