Stumped on my Issue

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jpkang

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Feb 15, 2013
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Hi,

A few months ago I had thought I had a motherboard issue and decided to RMA my mobo and I recently got it back. Now I have tested the "new/replacement" mobo and my computer still does not work...

My computer is practically new, had it built late September and it magically broke down in mid-February. It somehow broke when I moved it from the top of my desk to the bottom of my desk, I plugged everything in and all my LED lights came on. I left my house for a few hours and came back to a "dead" computer.

What I did previously with the help of a user on the forum was to make sure everything was secure and it is now. I tested my PSU with a paperclip and it worked, tested on a different computer and it worked, and tested the volts with a multimeter and got the correct voltage. I tried to use the PSU from the spare computer but that did not work, so I thought it was a mobo issue and got it RMA'd. I now am stumped as to what the actual issue is, I think it might be my RAM. The problem that I notice is that even with the memory taken out and I power up my computer, the mobo does not indicate with any noise or lights that there is no memory which I assume that it usually has some kind of diagnostic light or noise to indicate missing memory.

I also tried disconnecting my SSD (boot drive) and leaving my HDD to be the new boot drive but still does not turn on. I disconnected all my drives and see if the MOBO turns on at least and no luck. I have no clue what the issue is, maybe its the CPU or the amperage of my PSU but can someone suggest anything else I could do at this point? I think I am eventually going to warranty all my parts...but that would mean I have to pay for shipping on everything which sucks.

My build:
CPU: Intel Core i5-3450 Quad Core Ivy Bridge 3.1
MOBO: Gigabyte GA-Z77M-D3H-MVP
GPU: EVGA Nvidia GTX 560 1GB 256bit
PSU: PC Power & Cooling Silencer MKIII 500W 80+ silver
Drives: OCZ Vertex 120 GB SSD, Seagate 1TB HDD, LG BD-ROM/DVD combo drive
RAM: Kingston HyperX Blu 8GB (2x4GB) DDR3 SDRAM 1600
Case: Antec 302 Mid-tower

Thanks.
 
Solution
K
Well there is a possibility that your power button is non functional. This is going off of the fact that you have tried your psu in other comps I remember you saying, and you RMA'd the motherboard. So unless they gave you back a busted motherboard, or the other computer is magic and works while your psu is busted, then I would say the next logical place to look is at the wiring.

Your power button likely works as a short between the two pins it connects to on the motherboard. When you press the button, the circuit is momentarily completed and that sends a signal to all components to turn on.
Those buttons DO wear out, as well as simply break due to being faulty. I have read that you can complete the circuit with a screwdriver...
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Kadathan

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Mar 25, 2013
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Only thing that comes to my mind, I just had one that appeared dead not too long ago and turned out a wire was caught in the fan on the heatsync, so I would check that all wires are clear of all fans... if the processor fan is kept from spinning up the board WILL appear dead. Sorry nothing else is really occuring to me at the moment... Do you hear the PSU come on and all your other fans(Plugged into the motherboard) start spinning? What happens when you hit power?
 
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jpkang

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Feb 15, 2013
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When I hit the power button, nothing happens. No fan, no PSU, no nothing. Diagnostic lights don't even turn on. And nothing is caught in the fans, I have exhausted my thoughts on how to solve this and my friends don't even know.
 
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K

Kadathan

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Mar 25, 2013
156
0
10,710
Well there is a possibility that your power button is non functional. This is going off of the fact that you have tried your psu in other comps I remember you saying, and you RMA'd the motherboard. So unless they gave you back a busted motherboard, or the other computer is magic and works while your psu is busted, then I would say the next logical place to look is at the wiring.

Your power button likely works as a short between the two pins it connects to on the motherboard. When you press the button, the circuit is momentarily completed and that sends a signal to all components to turn on.
Those buttons DO wear out, as well as simply break due to being faulty. I have read that you can complete the circuit with a screwdriver momentarily touching both pins(Don't hold it there, just a moment to get the main board going is enough.) I have never done this as I have never needed to, but the theory is sound.

Myself, were I to do it, I would avoid using a magnetic tip screw driver. You can choose to do it but if you do, you might want to look a little deeper into how to do it... unfortunately I am unable to research the method fully for you right now. You can find people talking about it(Screw driver on power button pins) in the breadboarding post in the systems forums here on Tom's.

At least it's something else to try, it's not gonna fix itself after all :p
 
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