PC hardware forum: Gateway All-in-one powers on for couple seconds then off

by: anywhereman2009 November 20, 2012 2:36 PM PST

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Gateway All-in-one powers on for couple seconds then off

by anywhereman2009 - 11/20/12 2:36 PM

Gateway All-in-one ZX6951 with Acer H67H2-AD motherboard, 4GB RAM powers on when I insert the power cord and then shuts down in about 3 seconds. If I pull the plug and reinsert nothing happens for about 2 seconds then the fan begins to whir and 2 seconds later it shuts off again.

If I reset CMOS by moving jumper it goes back to starting immediately upon insertion of power cord and again shuts down in about 3 seconds. After that it's back to nothing for a couple seconds when I insert the power cord and then fan whirs again and shuts off.

I have tried new power supply, removed RAM, HD, unplugged all devices, etc. all to no avail. When I remove RAM I get no beeps of any kind. I'm out of guesses.

When I reset CMOS and insert power cord and it starts immediately and remains on for 3 seconds versus subsequent insertion of power cord where nothing happens immediately and then fans whir and shuts down must mean something but I'm not sure what.

Thnaks

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