Have I shorted my motherboad

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vantagebuilder

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Jul 30, 2014
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My newly built PC has been working fine all day but I just tried to plug in the LED'S for my front panel and now it won't bios beep and won't show up on monitor.

I have unplugged everything including ram, graphics card and even reset the CMOS battery but nothing has worked, do I need a new mobo?
 
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vantagebuilder

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Jul 30, 2014
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All the LED's came with the case but yes I'm talking about the power indicater LED

 
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boosted1g

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Jun 12, 2013
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Use your manual and make sure you have the pins in the right spot, if you are sending power for an led to say the reset switch, then yeah you will have some bootup problems.

The paperclip test is unpluging the 24pin connecter of the power supply from the motherboard, taking a paperclip and jumpering from pin 16 (green wire) to any black wire (assuming you dont have a psu wiht all black wires). If the psu turns on the fans and hard drives then the psu is good.
 
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vantagebuilder

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Jul 30, 2014
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Thanks I just looked it up online and have done the paperclip test but it made no difference, the PSU worked, I unplugged everything from the motherboard but it still won't beep on bios
 
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rab33z

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Jul 31, 2014
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As its a new board I would just send it back and say it never worked. You can short certain front panel pins which will kill the board, but not usually possible with most pin layouts.
 
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volcanoscout

volcanoscout

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Jan 5, 2014
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What case and mobo do you have?
Did you change, add or remove anything else besides the LED leads?
When you plugged in the LED leads, did you plug or unplug any other leads, as in unplugging another lead to get it out of the way and then plugging it back in after?
Was the PSU plugged in at the time?

If the polarities on the LED leads were reversed, the worst thing that would have happened is the LEDs wouldn't work - it wouldn't even burn them out even though that's very easy to do. Something else has to be in play.
 
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vantagebuilder

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Jul 30, 2014
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The case is a CIT Vantage and the motherboard is out of an old Acer M3400 PC,
At first I changed the RAM and the LED's, the PC beeped but the LED's still didn't work, the next time I tried to mess around with the LED's it wouldn't beep.

The PSU was not plugged in when I did the change and yes I did pull out a couple of cables, but now I have everything unplugged and there are no error beeps at all.

Shall I just buy a new motherboard because I can afford this even thought it's a pain.
 
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vantagebuilder

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Jul 30, 2014
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Yes it booted up the first time, the second time I played with the LED'S it didn't beep.
 
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