OK then check into getting another PS since you say the GFX card isn't overheating. I had a problem
similar to what you are experiencing a few years back with an ATi card and it wasn't overheating or
dxdiag didn't report and thing wrong either but I replaced the card and the trouble just went away.
To be certain it was the GFX card I tried it in another system and it started having the same problems
with the blank/black screens pulled the ATi card out and replaced it with the original and problem gone. :iagree:
But both systems had really good PS's in them at the time so it could very well be that your Bestec PS
is what's causing all of your problems. I believe I'd be looking for another PS and stay away from all of
those no name PS's stick with a brand name PS like Antec or Corsair, Thermaltake, SeaSonic, Enermax
PC Power and Cooling, Zalman. etc., etc,.