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Can motherboard get fried from ethernet cord and router not?

by JeremyWUA / April 30, 2014 4:33 AM PDT

Ok so I live in tuscaloosa AL and there was a big storm over the past couple days. Before the storm started I shutdown my perfectly working computer (which I had built 10 months ago) and unplugged everything but my ethernet cord that is run to my router. I go to turn it on and it wont come on. I tested the power supply (turning a paper clip into a U shape and plugging into the motherboard prong on the power supply) and plugged the power supply in and the fan was working. I figured since the router was not fried that there was no way it could have harmed my motherboard. I went and bought a new power supply and plugged everything in and computer would still not turn on. I have checked all the wires, blown all the dust out, and checked to see for burns on the motherboard and have found nothing. I am completely clueless as to why it wont turn on unless the motherboard somehow got fried from lighting going through the ethrenet cord and not damaging the router. I would appreciate any help considering I don't want to buy a new motherboard and ill have to get new windows etc. Thanks!

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Clarification Request
Have you
by itsdigger / April 30, 2014 5:06 AM PDT

tried a different power outlet ?


All Answers

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maybe the front switch is broke

short across the power pins direct on the mobo and see if it starts up. If so, you can get a new switch from radio shack and use it, a momentary push type.

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Just tried
by JeremyWUA / April 30, 2014 5:38 AM PDT

I just tried with a paperclip holding with pliers and did not work. Yes I have tried other outlets and all outlets are working.

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to me that leaves
by James Denison / April 30, 2014 5:50 AM PDT
In reply to: Just tried

CPU gone bad, unless you removed it, cleaned, and then reinserted it, bending a pin at the same.

RAM gone bad, if two sticks, test with one at a time.

Some motherboard component failed. If the computer is older or has ESR type capacitors then one or more may have failed. Look for busted, or swollen caps.

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Like I said
by JeremyWUA / April 30, 2014 5:55 AM PDT
In reply to: to me that leaves

It is only 10 months old and I have never had a problem with it. It was working fine and I shut it down like I do once a week and just unplugged everything but ethrenet cord right before the storm and now it just wont come on. All i know left to do it unplug everything and check everything real good and put it back in and if it doesnt work, im assuming I will need a new mobo.

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Start small.
by R. Proffitt Forum moderator / April 30, 2014 6:17 AM PDT
In reply to: Like I said

For a power up test I only need motherboard, power supply and that PWR jumper/switch. If those 2 parts don't power up, we are looking at 1 or 2 bad parts.

Keep in mind some boards won't power up if the CMOS battery is too low.

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I like to keep cheap CPU around
by James Denison / April 30, 2014 7:33 AM PDT
In reply to: Like I said

that fits the sockets I use on motherboards to test them with. For instance any AMD Sempron 140-150 that will test an AM2-AM3 motherboards cost about $15-20 used on Ebay. If it shows the motherboard is bad instead, I've not spent much but still have a backup CPU for the new motherboard I replace it with.

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