home built pc help needed
16GB DDR3 RAM hyper x
MSI GTX-460 video card
200 GB SSD Sandisk
320 GB HDD WD
1 TB HDD Hitachi
corsair tx-750 power supply
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.