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Old 01-03-2011, 02:03 AM   #1
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Default PC switches on and goes off after a while

Howzit guys.

Everytime i switch the pc on, all fans goes on, (no BIOS beep) and switches off after 5 or so seconds.

I stripped all the components, leaving only the motherboard, cpu and PSU intact still does the same. I tried a different powersupply but to no success it switches on and switches off 5 seconds later.

Any thoughts?
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Old 01-03-2011, 02:22 AM   #2
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Default Re: PC switches on and goes off after a while

Any beeps sound you get when switch on the pc?
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Old 01-03-2011, 02:29 AM   #3
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Default Re: PC switches on and goes off after a while

nothing... made sure the onboard speaker is plugged in.
stripped the RAM still giving me no beeps.

Do you think its the motherboard?
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Old 01-03-2011, 02:43 AM   #4
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Default Re: PC switches on and goes off after a while

I think it may be motherborad or cpu.
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Old 01-03-2011, 03:17 AM   #5
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Default Re: PC switches on and goes off after a while

what i did is, strip the motherboard from the case, to eliminate the power button or case fault still goes on and off after a while. How can i test if the CPU is faulty? I get no BIOS or post screen.
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Old 01-03-2011, 05:29 AM   #6
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Default Re: PC switches on and goes off after a while

this probably won't help, but you could try and re-seat the CPU.
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Old 01-03-2011, 06:03 AM   #7
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Default Re: PC switches on and goes off after a while

I stuck the CPU in another pc, booted up, so all in all going to replace the motherboard.
Thanks for all your help.
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Old 01-03-2011, 06:18 AM   #8
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Default Re: PC switches on and goes off after a while

Glad to hear you the issue has been resolved. Try to make a document regarding this issue and mentioned step by step of your effort for resolving. This will help others for future.
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