I usually leave my computer on when i leave and when i come back its fine. But this time, It did not wake up from stand by. I tried moving the mouse to see if it would, but it did not. I restarted the comp and now i dont get any beep. The CPU fans runs and i can heard the hd spinning. THe monitor does not display anything and the lights for the keyboard and mouse do not flash..there is no beep what so ever. I have a asus A7V333 Thanks in adcance

This might be better answered in the hardware forum. First unplug the computer. Then cycle the power button a few times,, holding it down each time. Plug the computer back in and try a restart. Most other tests require some sort of voltage testing or parts removal. If you have ESD protection and are aware that any household electric device can kill you if you don't know what your are doing then you might try a few things. If the PS is OK then I usually start pulling out all IO cards and retry. Pull out all ram and reset or leave out and try for beep codes. If all else I pull every thing off and try it. Be careful and put the cards back in the same exact place.

i took out the ram and tested there.. it did not beep.. frieD?

This all assumes that your onboard speaker works or the case speaker works. Some Mobo's have a led segment to tell what the fault code is. We still don't know about processor. We still don't know what the P/S is doing. All voltages need to be nearly exact under proper loading. I can't get the mfg's page to show manual. See if it dl's for you and see what it says under troubleshooting.