Pc only works on its side, help?

[chromic]

Someone apparently removed my thread for X reason...

Specs:
MSI Z97 Gaming 5 ~3 months old
I5-4670K Delidded 4.6@1.32v
XFX r9 290
3x2gb corsair xms3
XFX 750w pro "xxx" edition psu ~2 month old

So the problem is that my pc only boots while on its side, if i set it upright it shuts down/freezes and when i try to boot after that, motherboard gives like every possible debug led # there is.

Tried with and without the gpu. (same debug led #)
A9
26
55
77...

Yes, fans spin, hdd spins, leds light up.

Everything is connected, and before you start saying anything about failed heatsink installation, 70c @ IBT.

On its side the PC works as intended/no problem.

 

[mouse24]

Standoffs in proper places? Properly tightened down the mobo? anything under the mobo thats might be shorting it out, like a stuck screw or something behind the mobo? Is your CPU heatsink firmly in place? It might have a screw not tightened down all the way causing one side to lift up a bit in that position.

Hmm, long shot but double check your wires. Might have one with a defective hook that keeps it in place in the socket so its only properly seated when in that position. Gently pull on the wire going into the connector one at a time.

(sorry for bad sentencering, really tired)