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Won't boot after shutdown


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#1 Oaleo

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Posted 08 February 2012 - 10:57 PM

I've been having this weird problem for a while. If I try to turn on my computer after shutting down, sometimes even sleeping, the fans will spin and lights will come on but it won't boot. The GPU fan also goes crazy every five seconds, until I shut it down manually via the PSU switch. I've switched the case and the ram in the past few years and I still have the problem. I've already tried updating the BIOS, triple checked all my wiring, so I assume it must be some faulty hardware, but I don't know what.

Gigabyte GA-790FXTA-UD5
Phenom II X4 965 BE
Radeon 5850
Corsair HX850

Edited by Oaleo, 08 February 2012 - 10:59 PM.


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#2 rotor123

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Posted 09 February 2012 - 02:46 PM

When you switched the case did you also switch the power supply? If not can you swap in a known good one to test?

That is only one possibility which is why I say test.

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#3 James Litten

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Posted 09 February 2012 - 04:25 PM

If you have a PS/2 mouse plugged into it you can try setting it to "Power On By Mouse" in the BIOS under Power Management and see if that exhibits the same behavior. If it works correctly with the mouse then quadruple check your wiring of the power switch :)

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#4 Oaleo

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Posted 09 February 2012 - 04:44 PM

When you switched the case did you also switch the power supply? If not can you swap in a known good one to test?

That is only one possibility which is why I say test.

I didn't, and I don't have another power supply to test it with.

If you have a PS/2 mouse plugged into it you can try setting it to "Power On By Mouse" in the BIOS under Power Management and see if that exhibits the same behavior. If it works correctly with the mouse then quadruple check your wiring of the power switch :)

James

No PS/2 mouse, sorry.

#5 rotor123

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Posted 09 February 2012 - 04:50 PM

As a work around you could do what I do.

When I shut down I then throw the Power switch on the power strip to remove AC from the computer and accessories. That helps keep surges out too.
I have set in the Bios settings to turn on after power loss.
When I turn on the power strip the computer comes on automatically.

Fortune Cookie says: Fortune not Found: Abort, Retry, Ignore?

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#6 rotor123

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Posted 09 February 2012 - 04:50 PM

oops double post

Edited by rotor123, 09 February 2012 - 04:50 PM.

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#7 Oaleo

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Posted 09 February 2012 - 05:18 PM

As a work around you could do what I do.

When I shut down I then throw the Power switch on the power strip to remove AC from the computer and accessories. That helps keep surges out too.
I have set in the Bios settings to turn on after power loss.
When I turn on the power strip the computer comes on automatically.


I appreciate the help. I suppose I'll have to take it to a computer shop so they can figure it out, then I can rma whatever's faulty.

If you had to guess, would you think it would be the power supply or the motherboard? And why?

#8 rotor123

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Posted 09 February 2012 - 05:57 PM

I can not tell you why since I've seen it from all three causes and there may be more causes too.

Motherboard
Power supply
Windows problem.

So I just start with the easiest.

I try a spare power supply, if that doesn't do It I move to the next stage.

Spare Hard drive and a fresh load of windows.
Since to me that is fairly easy because I keep spare drives around and I don't bother to activate just for testing.

if that fails then I look at the motherboard.

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