I have a Nvidia GTX 260 installed on my PC. Its almost 3 years now. In recent times whenever i play a game the display goes off and the Monitor enters to sleep mode. But the fans in the system still running, at certain times there is high pitching sound and low pitching sound from the system. I have replaced the 600w SMPS and this still it happens.
Everything goes fine until i play the games, the game gets struck in the middle and the monitor goes off. After i press the restart button, the system loads up but from now on even without playing the game the display goes off anytime randomly. I am really confused whether its GPU fail or CPU fail.