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Bios no beep but system starts

Last response: in Motherboards
August 3, 2010 10:38:38 AM

My bios has stopped emitting a beep tone during post but appears to start properly. Also, every once in a while the system starts on it's own. I've read that both of these problems could indicate a faulty power supply. Is there a way to check if the power supply is bad?
a c 91 ) Power supply
a b V Motherboard
August 3, 2010 12:29:42 PM

It could also mean that the speaker is faulty or not connected properly.. Are you experiencing any sudden restarts or system hangs or other similar anomalies.?
a b V Motherboard
August 3, 2010 12:32:43 PM

a faulty PSU would usually make a system shut down, not start up...

my first thought on the lack of a beep would be that the beeper has stopped working. not sure about the start ups though
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August 3, 2010 12:38:32 PM

System speaker seems to be connected properly start, run, cmd, ctrl+g causes beep. System hangs every now and then but not often enough to mention.
a b ) Power supply
a c 292 V Motherboard
August 3, 2010 1:45:13 PM

Can be the PSU or just a short between the mobo and PSU. If u can test the rig with another PSU for at least one day.
August 10, 2010 5:09:46 PM

Don't have another PSU to test with. Where do you suppose the short could be? checked all the cables and none seem to be disconnected nor loose.

Best solution

a b ) Power supply
a c 292 V Motherboard
August 10, 2010 5:50:20 PM

Between the mobo and case.
August 25, 2010 12:12:56 PM

Best answer selected by bernie_05.