Asus Maximus Hero POST Problems: Heaps of different Q Codes

[Moejoe]

So after some time now i wanted to build a new system but the problem just keep coming....

Hardware used at this point.

Intel Core i7 4770k
Asus Maximus VI Hero
G.Skill Trident 2400/Cl 10-12-12-31
AMD Radeon 290
Samsung SSD 840
Be Quiet! Power Zone 650W

Coolers: Kraken X40 for the GPU and a Coolermaster Seidon 240m for the CPU.

USB Devices: Keyboard, Mouse, Transcend 16gb Flash Drive

The Problem:

After putting everthing together, no matter what i do, i cannot get a stable POST procedure. Sometimes i can get into UEFI, but most of the time it freezes in one seemingly random Q Code. I believe chances are higher when no storage devices are connected, but i'm not really sure, since sometimes it posts even with them. Even though i think i never had a successfull POST when both the SSD and the Flash Drive were connected/dectected.

Q-Codes i had up till now: 99, 94, d4, 34, A2(with black screen), AE (with black screen), b4 and probably even some more i cannot remember...

Even without any USB Devices the POST isn't stable... so i am kinda at my wits end as to what is the problem. Any Help would be greatly appreciated.

Edit: Also the Board sometimes cycles through 15 to 99 for 5 times.

[Moejoe]

Well i'm going to dissassemble the rig now, thanks again for everything!

[HiVizMan]

Keep me informed please mate. You have a great festive period.

[Moejoe]

I will, as soon as i get my replacment, which will probably take a while due to the holidays. Happy Christmas/New Year to you, too.

[Moejoe]

Well everything works now, though what the problem was in the first case will probably remain unclear forever.

After sending in the Motherboard to the retailer i used the r9 290 in my old PC, where she died couple of days later. She didn't exactly die, but she produced artifacts in video-,2D and 3D Rendering. So i RMA'd the card aswell and got a 770 instead (fed up with AMD right now). What is intresting that these artifacts only were present when a driver was installed. Without the driver or in DOS there were no issues.

Couple of days later my retailer sent me a replacement board, which with the new card worked like a charm.

So possible causes of this could be:

Broken PCI-E Slot (which maybe damaged the VGA card?)

OR

Broken VGA Card in the first place.

But since i RMA'd both, i guess we will never know which one was the culprit.

Once again thanks for you help!

[HiVizMan]

Outstanding my friend I am pleased you are sorted. Thank you for posting back and enjoy your system.