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PC Power On Problem


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#1 Al1000

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Posted 13 April 2014 - 10:41 AM

I am having an almost identical problem, so thought perhaps I should post it here rather than start an almost identical thread,
 
Motherboard: ASUS M2N32-SLI Deluxe
 
PSU: Aspire ATX PSIV-600-2
 
(more hardware details in my profile)
 
Like the OP, the LED on the motherboard comes on, and the light for the ethernet plug also comes on when it's plugged in. But when I press the button to start the computer, absolutely nothing happens. Also, when I short out the green and black wires on the 12 pin connector, as per the instructions posted in the link in the OP, the fan does not come on.
 
Does this mean the PSU will likely be at fault, and are there any further tests I should do?
 
I have no-one to blame but myself, as I tried to move a desk the pc was sitting in, without first of all removing the pc from the desk. It worked fine before I moved it, but wouldn't work after. I have taken it apart and put it back together after closely inspecting all of the components, and there is no sign of any physical damage anywhere. I reckon the entire pc must have been rattled about a bit as the desk juddered over the carpet. I have also pulled the front of the case apart and inspected all the wiring, and there is no sign of any damage there either.

Edited by Queen-Evie, 13 April 2014 - 12:16 PM.
split from http://www.bleepingcomputer.com/forums/t/530378/pc-failed-to-power-on/


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#2 zingo156

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Posted 14 April 2014 - 11:02 AM

If you disconnect the power supply from all devices, hard drive, dvd drives, atx 24 pin from the main board, etc... and then short the green and black, does the fan come on then? If the power supply is disconnected and it does not come on by shorting the green and black, your psu has a problem.


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#3 Al1000

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Posted 14 April 2014 - 05:52 PM

No the fan doesn't come on when I short out the green and black wires after disconnecting all devices etc.

 

Thanks for your advice.



#4 zingo156

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Posted 15 April 2014 - 07:26 AM

Did you unplug the power supply from the wall after disconnecting everything and then plug it back in to the wall and short the wires with it still disconnected from the pc devices? I would give that a shot.


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#5 Al1000

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Posted 15 April 2014 - 07:30 AM

Yes, that is exactly what I did, thanks.



#6 Al1000

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Posted 23 April 2014 - 05:39 PM

Just to update this thread, the problem was indeed the power unit, and also a faulty memory stick.

 

Thanks again for your help.



#7 zingo156

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Posted 24 April 2014 - 07:17 AM

Glad to hear you have solved the problem. Happy computing.


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