Not necessarily a BSOD crash but..

Well it's quite evident then we have a hardware issue, it's just a matter of what hardware it is. Right now, I suspect your motherboard, but the unfortunate thing is that hardware diagnostic tests can only go so far as to discovering a hardware issue. Really the only tried and true method is swapping hardware till you find the culprit. I would start with the motherboard first since it's most likely the element causing your "buzzing" and your other random symptoms are conducive of it. Other suspect items would be your PSU and your CPU, in that order of possibility.

From another thread i posted the CD/DVD drive was the culprit but a few days ago i also ran IBT and Prime95 for a few hours though i didnt run the large FFT only small FFT and blend tests.
Also in regards to the hardware 1 of 3 were replaced so that leaves the CPU and Mobo.

The CD/DVD drive was responsible for the "Bzzt" sound?

Large FFTs on Prime95 will isolate the work to just your CPU caches and stress all of them. You can still try it, but I'm not sure it will produce any results that differ from the other two now.

I'd point at the mobo first before the CPU.

Vir Gnarus said:

The CD/DVD drive was responsible for the "Bzzt" sound?

Large FFTs on Prime95 will isolate the work to just your CPU caches and stress all of them. You can still try it, but I'm not sure it will produce any results that differ from the other two now.

I'd point at the mobo first before the CPU.

Not entirely sure what was causing those noises but i guess im going to find out once i take out the drive for a bit.

Vir, here's the thread: My ongoing Windows 7 freeze part 3