Forum Thread

home built pc help needed

mrlaugh 13,717 459 August 27, 2016 at 01:16 PM
I am apparently in way over my head this time, could really use some help/thoughts.

16GB DDR3 RAM hyper x
MSI GTX-460 video card
200 GB SSD Sandisk
1 TB HDD Hitachi
corsair tx-750 power supply
cd/dvd writer/reader
gigabyte ga_z97-hd3p motherboard

on Sunday night my system froze while watching a YouTube video. it was late, so I held the power button until it shut down. Monday after work I hit the power button, the fans spin up, run for a few seconds, then it turns off, then it powers up again, and repeats infinitely as far as I can tell. I remove the graphics card, the memory, the hard disks, until all that's left is the power supply, motherboard, and CPU. it still does the same. won't post, doesn't beep, just power cycles endlessly.

after reading online a bit and taking to the it guy at work, I think it's the motherboard. I email gigabyte but don't expect much help. after four days with no response, I buy a MSI z97 pc mate motherboard, which I installed this morning. going for broke, I plug everything in. the system powers up, the fans spin, but it won't post, there is no display, my USB mouse plugged into the back panel didn't seem to be getting any power, and worst of all, the case power LED didn't turn on and still no beeps from the speaker. I set and reset the front panel connections, but nothing has changed. I removed the graphics card and connected to the on board, I removed the RAM and tried different combinations, I removed all of the drives, and still nothing. no power led, no HDD activity led, no beeps, no graphics output. it responds to the power button, but all that I can tell is happening is that the fans are spinning.

I guess I'm down to three options again, either MSI sent me a bad board, my CPU is fried, or the power supply is fried. I don't have spares, so I'm really not sure what to do at this point. any thoughts or advice would be greatly appreciated.



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Joined Jun 2005
Let Sleeping Dogs Lie
5,875 Posts
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make sure you have all the power connectors installed, did you miss the extra power for the motherboard or plug in the CPU fan to the wrong place?

Take the system out of the case and try it then. Have someone come over and have you point out all the connections you have made while they check the manual.
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Short of figuring it out with komondor's suggestions, you're going to have to spend money. I'd buy a power supply first, unless any of the capacitors on your motherboard are obviously bad. Look for bulging and/or discharge. Can you borrow a power supply for troubleshooting?
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would agree with hbarn. borrow a power supply first.
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your board might be getting grounded by your case.
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Joined Aug 2005
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All good suggestions here and good troubleshooting short of buying a motherboard so fast. The system won't post without ram, but you can certainty try different sticks.

I agree next is a power supply. Do you have one you could borrow from a friend? CPU's dying randomly are really rare.
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Vague questions receive vague answers . . . . . .
Make sure the cpu heatsink is on good.
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When you power on, does the fan spin in the power supply?
Is the power supply set to the right voltage (should be a nob on the back of it)
Is the power supply turned on? There is a toggle switch on a lot of PS and if you turn it off, it will do as you described: lights and fan come on for a second and then nothing.

If you or a friend don't have a space ps then try computer stores. They should have some laying around. You can take your case there and just ask if you can plug it in.

RAM is a good thing to check as well. Try them individually and then together again. Then another set if you have any spares. The geek squad might be able to help as well. Take your tower with you and see if they just have a few parts for you to play with while staying there in front of them.

I doubt its the processor. It doesn't sound like it stays on long enough to over heat and if it did originally, I am sure you would be able to see some black marks or at least smell it.
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