Do I need a new motherboard?

Chiliano

Honorable
Jan 9, 2017
5
1
10,515
Hello I am writing on here because I have run out of ideas and check lists to go through myself. I am currently in college for CIS. I fix computers from time to time and I recently got a client who claims he built his own PC but it will not work.

When the PC was first brought to me he described the problem as this. "When ever I turn it on, it starts for two seconds then turns off again."

With this information I took the side panel off and looked at the wiring and ports. I wasn't able to see anything wrong with it that would be obvious; However, when i asked him to plug it in and turn it on so I could see what his problem more clearly something happened. when he plugged in and turned on his computer the 4-pin CPU plug that goes into the motherboard, sparked and made a popping noise, so i quickly cut the power to it.

There was some smell of burnt wires. I unplugged that plug and switched it with the other 4 pin plug, but when i did that i noticed that the first plug was not in the correct way, there ware some grooves and that is when i noticed that my client had plugged in his wire the wrong way and that's why i think it shorted out but this is where i get slightly more confused.

After switching out the plug and trying it again, the power came on, the fans and lights turned on, there were no beeps and the display did not turn on, i went through toms checklist on this site and installed some separators under the motherboard so that the bottom of it wasn't pressed up against the case. but still no image or beeps.

I independently tested out the graphics card, ram sticks and even the hard drive on my own computer and they all worked fine but nothing was working back in the other computer. then I noticed that every time I turned on the computer I had to unplug it in order to turn it back off because the button would become unresponsive after the initial start. the longest I held the power button for was roughly a minute and a half when testing this. to me this means that the mother board isnt communicating with the power supply properly.

I am not an expert in computers but I know enough to where I don't usually have these types of problems and this is a new one I've never had to deal with before so I am on here asking for help. Will i need to order a new motherboard for this PC? did something fry during the short? if so why do the fans still come on?

I gave as much detail as I can.

The motherboard is a: ASUS H81M - A
Power supply is a: EVGA 500W
Graphics Card: Zotac GTX750 Ti 2GB 128BIT GDDR5
RAM: Crucial Ballistix Sport 4GB DDR3-1600 UDIMM (2)
Processor: Intel® Pentium® Processor G3258 (3M Cache, 3.20 GHz)
Processor cooling unit: Intel E97378-001
Hard Drive: 1TB Seagate Barracuda

Also during all my testing and inspection I noticed that the motherboard had the pins for the processor and exactly 17 pins were bent. I carefully straightened them as best to my ability and there was still no change. The Intel processor piece is flat, the pins are on the motherboard. (just wanted to make sure that part was clear.)

Is a new mother board needed?

Thank you in advance for any help or suggestions you can give!
 
Solution
Hard to say about the short causing more damage , but the bent pins even if they seem all good now still sends up a flag. My guess is the board because of the pin damage. Of course not 100% , but my guess.

Chiliano

Honorable
Jan 9, 2017
5
1
10,515


I know :/ that is one of the reasons I wonder if I should just get a new motherboard? but could the short have also affected the motherboard in a negative way? so many questions and i don't want to tell my client to get a new motherboard and then for some un-forsaken dis-miracle have the problem remain, ya know?