There was a long power cut in my locality n the power was out for almost 2 hours. I wasn't around at the time and the computer was on. The psu is a recently bought fsp unit with active pfc. The psu operates normally on the ups which is a stepped wave unit. My home has its power back up from an apc home ups which is again a stepped wave unit. The computer was plugged into an outlet that had backup from the home ups which i think is the root of the problem. When i came back, i noticed that the computer had frozen. The fans and the hdd were spinning. The cpu fan was spinning at its full speed. All the signs similar to my last system where my processor was fried. When i shut it down pressing the power button for 5 secs and tried booting again all that happened were the fans spinning at full speed and no power on led light and a constantly on dvd drive light, no post no nothing. Now i started checking all the voltages, all appear ok except for the gray wire (power ok signal) ironically, the voltage on this one is 0 when power button is not pressed but only goes up to 0.8v when it is pressed. And the same behavior as though there was no cpu installed. Is there any chance of the power supply good signal to come up again anytime soon or do i have to get it replaced? Is the general system behavior similar to what would happen if there is no power good signal? Thanks.