when i was using my pc it just hanged up and opened task manager and ended programs... after it all icons were vanished then i clickd alt+cntr+del and selected log off Even after long time it was showing log lging off. I lost my patience and pressed restart button. After it screen went black and no response after it. I turned off ups and there after when i started pc normally i didnt get output on monitor. i checked monitor in other pc and its fine. and the blinking red light of cpu is no more and permanent green light is there.