Hi! I'm stumped if my Sapphire HD 6870 is dead. A week ago I tried booting it up and the fans were running at a 100% and the I heard 5 beeps with no video on the display. I tried forcing it on and off and the same thing happened and thought I'd just give it a rest for a day. The day after I tried it again and since I had more time to fiddle with it I was looking for the problem. I found out that the North and South bridge are heating up beyond normal. 5 beeps pointed out that it was a processor problem which I thought was near impossible `coz I didn't OC it that high and I have this big cooler to support it. So what I did was borrowed a mobo and tried using my hardware there. The system booted the 6870 fans were not trying to fly and no beeps. It even went to windows so I thought it was my mobo and hurriedly went to the shop and have it replaced thru warranty. They tested my mobo at the shop and nothing was wrong with it. And they said it that my 500w power supply (cooler master silent pro) was not enough to power the my system. Which kind of made sense at the time. Since I don't know anybody here who has a more powerful "80 plus" PSU, I bought an FSP Aurum 750w Gold with the money I had left. (It was the cheapest modular 750w with a gold rating I could find.) I went home benchtested my hardware and tried the new PSU. Just my luck! Same thing while booting up.Tried the old PSU and same problem vid card fan too loud, no video and 5 beeps. I facepalmed for 5 mins and left the system on. Turned it on and off again and it worked! I got inside Windows. So I checked temps for the procie and it was normal at 22C degrees idle. So I ran Catzilla and pulled up hwmonitor, gpu-z and afterburner. All components were at stock speeds. Midway thru the benchmark, display went dark I heard a beep but the system was still running. I forced the comp to shut down, unplug the power cord and touched the vid card. The vid card was uber hot to the touch especially the part where you plug the 2 6 pin power cords. I tried re-seating and reapplying the thermal compound and nothing happened. Is it really dead? Can I do something to revive it? Is it time for an upgrade. I was thinking of waiting for the 8000 series for an upgrade but I guess I'm out of luck.