every time i tunrd the power button of dell optiplex 755 power supply it turns on for just 2 or 3 seconds then tund off second time i push the power button from cpu then works fine plz help
reset bios to defaults in maintenance. what bios version ? a lot of these boards had issues on first generation for 3 months due to intel manufacturing issue. power supply also can go bad and its special small size.. u can test with open case with new bigger standard size power supply. i have one here that did the blinking orange power led .. tried my power supply and it works.. now i plugged in old and that works too.