I've been using this computer for several years with no recent changes to its hardware or software. Last night while entering data, the monitor, fans, drives all suddenly stopped. The power LED was still lit. Keyboard and mouse wouldn't get it to do anything so I pressed the power switch and it was off. When I press the power switch now, the CPU fan runs for a second and stops. Nothing else happens. No beeps. I swapped in a power supply from a good pc and it behaves exactly the same. (I'm now writing this message on the pc with the good PS back in it.) Any ideas? Failed motherboard? Failed CPU? Thanks
Could be a processor failure, but try changing the cmos battery first on the mobo and locate 'JBAT1' terminal on mobo and put jumper across pins 2-3 then back to pins 1-2 and try starting up again.
Open the case and looks at the capacitors to see if they are raised if so need new motherboard
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