Gigabyte z87x-ud3h turns on then off... i have tried it all.

intel i7 4770
gigabyte z87x-ud3h
corsair vengeance ddr3 1600mhz (it is compatible with cpu/mobo)
corsair ax860 modular

Ive tested everything I could think of and even browsed the web for a good week. Which leads me here, im stumped. I hve the board ontop of its mobo box and been using this as my breadboard station.

Ive reseated everything... cpu,cpu cooler, ram, psu... all with no luck. I have changed psu's, swapped motherboards, changed RAM... checked and rechecked my cpu power cables, checked my psu power(on both)

everything is brand new except the 2ndary PSU which i pulled from another build.

HELP?
7 answers Last reply
More about gigabyte z87x ud3h turns
  1. forgot to mention that I have power to my motherboard... the power button stays lit when the psu is turned on... but it wont fully post/boot when i press the power button.
  2. bought a new cpu to test and same thing... quick fan start, then shuts down. only thing left to test is the RAM and motherboard again.
  3. went with asus z87-plus, as a new mobo, got new compatible ram, and still with my luck, no POST. bought a psu tester, everything checks out ok on both power supplys... Also checked a dead psu jus to be sure psu tester was working. it HAS TO BE THE HEATSINK!.... the one and only part I did not swap out in my whole build.

    losing my mind over here.
  4. so your asus z87-plus working with your same cpu, mem, psu and cables on giga z87x-ud3h OK?
    did u try to totally clear cmos once?
    turn to look at your motherboard if any hardware damage already.
    try to boot up it with only one dimm at a time, in different mem slots.
    good luck.
  5. Fixed.

    If im guessing correctly, it was the cpu fan that was causing a short. I ended up buying an i7 4770k and testing it in both motherboards(Asus z87-plus & Gigabyte z87x-ud3h). It worked in Asus, didnt work in GA. So my guess is I either fried my cpu and mobo, and didnt catch it... or, the stupid cpu fan. the mobo and cpu because I originally tried a i3, in 2 motherboards(both gigabytes) which both didnt POST. im happier I got the 4770k anyways... I jus figured Id keep track of my troubles here, because I searched the web and only read one posting about a issue similar to this, minus the cpu fan suggestion. all in all, hope this helps anyone else.

    thanks.
  6. I had exactly same problem last week with brand new Gigabyte Sniper M5 and Intel i5 4670K (both new). After trying everything I figured out that the problem was with CPU socket on the mother board. One of the pins was completely bent inside. I got the replacement of the board and everything is working fine. It was very difficult to make out that the pin was bent, I took microshot of the socket using 20MP camera and also used a magnifying glass.
  7. sky63 said:
    I had exactly same problem last week with brand new Gigabyte Sniper M5 and Intel i5 4670K (both new). After trying everything I figured out that the problem was with CPU socket on the mother board. One of the pins was completely bent inside. I got the replacement of the board and everything is working fine. It was very difficult to make out that the pin was bent, I took microshot of the socket using 20MP camera and also used a magnifying glass.


    originally I thought it couldve been the pins... but I glanced over the pins with a magnifying glass so I couldve been wrong about the pins being OK.
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