blow the dust out of everything with a can of air
redo the paste on the cpu with some arctic silver
http://www.arcticsilver.com/arctic_s...structions.htm
see if you can borrow a larger wattge psu to try in it
it supports these cpu's
Athlon 64 X2 / Athlon 64 FX / Athlon 64
eneles will be able to tell you where you can pick up single core if any one can