Hello,
I have a strange problem and I do not know what to begin with.
I have Asus P5K mb and Asus GTX260 graphic card. PSU is 400W. WinXP.
For about 3 months everything had been working perfectly. Several weeks ago the monitor started to lose video signal and go to sleep mode (and did not wake up). The thing is this can happen any time, not only in power consuming games – during movie, reading, surfing. At first, rebooting helped. Then it got worse – I could not even pass through Windows loading screen. When monitor shuts down, the sounds are as if the loading stops. And yes, when I am watching movie – after monitor loses signal movie sound also stops in two seconds.
Sometimes when I reboot monitor is off from the beginning, and beeps tell me that there is no VGA card. I cleaned the connectors, but that did not help.
I searched some technical forums, and saw advice to update the drivers. During the update process in Windows the problem repeated, video signal was lost. I successfully rebooted and tried again, and at the same place of drivers update that happened again.
I rebooted in safe mode, deleted old driver of the card, and installed the most recent.
For a couple of days it worked ok.
I even rebooted several times in a row to test, no failures.
But then the problem returned. Now sometimes there is no video signal at all, sometimes Windows loading completes successfully, but in several minutes lost video signal again.
Onboard temperature of VGA even in 3d does not exceed 60C.
It might be PSU problem (not enough power), but again, it worked properly for several months.
Sorry for the long text, but I am really confused with this.