Solved Mobo problem? or power switch?

October 31, 2012 at 00:07:42
Specs: Windows XP, amd 3gh quad core
I recently got a barebones kit and installed every component... mobo, psu, ram, ect... but when i plugged it in and pressed the button to power on nothing at all happened. I noticed no LED's on the mobo so i took the new psu out and put it in my older comp and it powered up with no problems. I figure my mobo is dead but I'm not 100% sure. Anyone have any ideas?

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#1
October 31, 2012 at 00:17:49
✔ Best Answer
To check that the power button is ok you simply remove the power button connector from the motherboard and then short the pins on the board together with a screwdriver - if the system starts then the power button is u/s, if it still doesn't then it probably is the motherboard so simply return it. Before you do though, try removing everything from the motherboard except the CPU/cooler and powering it on.

"I've always been mad, I know I've been mad, like the most of us..." Pink Floyd


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#2
October 31, 2012 at 01:09:06
Ok I tried both removing everything but cpu/cooler and putting a screwdriver on the pins and nothing at all again. No LED's the psu fan doesn't spin nothing at all happens. I know the psu is good because it works just fine in my old dell.

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#3
October 31, 2012 at 01:59:33
In that case, assuming you have put it together correctly, with motherboard spacers, not touching case parts etc. then it needs to be returned as faulty. When you have removed it from the case it would be worth just trying to power it up again on the bench, just in case it was a problem with shorting, but if it is/was then the damage may already be done.

"I've always been mad, I know I've been mad, like the most of us..." Pink Floyd


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Related Solutions

#4
October 31, 2012 at 05:08:07
Pull everything out of the case & bench test. You should have done that to begin with. And make sure the heatsink is installed correctly. If it's not seated properly or you applied the thermal paste incorrectly (or didn't use any), it can prevent the system from firing up. All AMD CPUs use the "middle dot" method.

How to Bench Test / Troubleshoot Your System

Middle Dot Method


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#5
October 31, 2012 at 09:49:01
Did the barebones system include the power supply? Did you add a graphics card after the fact?

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#6
October 31, 2012 at 12:41:29
the kit included the graphics card. i did the bench test and still nothing at all not even a led.

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#7
October 31, 2012 at 14:10:21
Your power supply may be under size. Post all the specs including model numbers.

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#8
October 31, 2012 at 17:29:07
It's unlikely even a bad motherboard would interfere with fans and drives spinning up and LEDs flashing.

Verify you've ID'd the power switch pins on the motherboard. Check that the power supply motherboard connection is tight. As already mentioned, see if it works with the motherboard removed from the case. Of course when doing that make sure you set it on a non-conducting surface.


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#9
November 2, 2012 at 00:46:27
Thanks for all of the help guys but i finally figured it out. The heat sync that came with the kit is WAY over sized and the bracket that goes on the back side of the mobo was grounding it out so I had to take a dremmel tool and modify it to work properly.... I found this out by pulling the heat sync completely off and doing a bench test and it worked....

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#10
November 2, 2012 at 00:49:18
Thanks for all the help. I figured out what was wrong. The heat sync that came with the kit was WAY over sized and the mounting bracket that went on the back of the mobo was contatcting and ground out so I took a dremmel tool and modified it to fit properly.

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#11
November 2, 2012 at 08:04:53
First of all you should NEVER run a system without a heat sink properly mounted, even for a moment. Second, you shouldn't need to grind anything. Are you sure you were mounting the HS in the correct orientation?

You should have listed the components that came in the kit and the ones you added.


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