Suspected power surge damaged PC?

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Buffwesty

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May 2, 2013
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I have recently experienced a power surge in my house, the phone line was frazzled and internet was down for about a week before being fixed. However my PC's ethernet connection is still not functioning despite the WIFI working normally for other devices. I have taken the PC apart, used microsofts diagnose tools and reset the bios and drivers via USB. I noticed more recently that my network adapter appears to have 'disappeared' from my device list.
Another symptom caused by the power surge is that my PC will also not turn off, I will shut the PC down however after 2 seconds it powers back on and boots up.

IF you need anymore details please specify in the answer section.

Thanks for your time!
 
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Zaman786Ahmad

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Jul 31, 2013
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what psu do u have ???
 
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Zaman786Ahmad

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Jul 31, 2013
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dependant of which one your have you may not have some security feautures which keep your system safe during things like this. however i recomd testing each part induvially if you can in another system and if poss try refund or replace the parts . also i think the power surge may of killed the network card if it doesnt work

also make sure your system is getting enough power
 
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westom

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First, diagnostics for hardware should be from hardware vendores. Software diagnostics (ie from Microsoft) are not designed to analyze hardware.

You have the classic example of a surge that was incoming on AC mains. It is electricity. That means it must have both an incoming and outgoing path through that computer. Incoming on AC mains. Outgoing to earth via the Ethernet and phone wires. Multiple damaged items implies is was a major hit. Since usually only one item in the path is damaged.

To say more about the Ethernet card means a diagnostic from the Ethernet card manufacturer or from the few better computer manufacturers.. Otherwise speculate either that card or it PCI interface is damaged.

A computer's power system involves many components. PSU is only one. The component that determines power off is a power controller that orders the PSU via a green wire. A meter could report whether the controller is ordering the PSU off or if the PSU is simply ignoring the signal.

Well, with minimal facts, It appears the #1 suspect is multiple parts of the motherboard. More would be known if that computer manufacturer is a better one that provides hardware diagnostics for free and if measurements are made with a meter. Reason for that damage was no properly earthed 'whole house' protector. Therefore a surge was all but invited to go hunting for earth destructively via household appliances. This time a best path to earth incoming on AC mains was apparently your computer via phone line.
 
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