Dead Motherboard?

Okay, so I just put together this system:

HSF – CoolerMaster Hyper 212+ CPU Cooler
HDD – Samsung SpinPoint F3 1TB HD103SJ
RAM – G.Skill Ripjaws F3-12800CL9D-8GBRL 8GB (2x4GB) DDR3
CASE – NZXT Phantom Case Black
PSU – Silverstone Strider Plus 750W ST75F-P
CPU – Intel Core i5 2500K
GPU – ASUS Radeon HD6950 DirectCU II 1GG
MOBO – Gigabyte GA-Z68X-UD3R-B3 Motherboard
OPT – Samsung SH-222AB SATA DVDRW Drive

I put it together and installed windows, then put the side back on and sat the case on the ground. Tried to start it again and it powers up, but after a few seconds it turns off. It then repeats this. It doesn't post, display anything, or beep (mic is attached to mobo).

Have tried:
– Reapplying thermal paste / cooler
- Using a different cooler
– Disconnecting everything except the 2 motherboard connecters, video card and ram
– Trying different RAM combo's
– Different video card
– Different PSU
– Turned PSU upside down
– Looked for things touching the case but couldn't see any shorts
- Clearing CMOS
- Does not beep when GPU/RAM not seated

I'm not sure what else to try right now. I don't have another mobo to test with. I thought maybe the CPU was overheating but I can't get to BIOS to check, and the cooler doesnt get warm.

Any help would be much appreciated :s
11 answers Last reply
More about dead motherboard
  1. It may very well be the motherboard, but it can also be the PSU.
  2. Toxxyc said:
    It may very well be the motherboard, but it can also be the PSU.

    I tested with another PSU and I get the same results.
  3. Ah. Probably motherboard then. It's still on warranty, so now is the time you want to exchange it.
  4. Yeah, too bad the store is closed until monday. Gonna be a long wait :(
  5. Can anyone else think of something I haven't tried?
  6. grounding or short circuit , maybe ... try check it in out case
  7. henydiah said:
    grounding or short circuit , maybe ... try check it in out case

    The motherboard is currenlty sitting on its box.
  8. just try use mobo+CPU + speaker motherboard if you can hear beep, it means CPU and mobo Ok , but you don't hear beep motherboard fail / or damage
  9. Yeah, that's the setup I'm using and it powers on, fans spin, then a couple seconds later it cuts out. Then a few seconds after that it tries to power on again, etc. It does not beep at all.
  10. last option , just positif for motherboard, unplug PSU , remove CPU let some minute, while you check the pins and holes on the motherboard socket, then plug back the CPU and use stockcooler. if it wont turn on , RMA is best way
  11. Tried putting the stock cooler back on. Pins on the motherboard seem fine. Guess I'll be sending the MB back.
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