Maximus IV Extreme - Q-CODE "00" and CPU_LED

lxwrencus

Reputable
Feb 17, 2015
7
0
4,510
Hello all, please be patient with me as this is my first post.

After a two days of troubleshooting, I am stumped with fixing my Maximus IV Extreme, which has the Q-CODE "00" and the CPU_LED illuminated in red.

Here is what I have tried:
*Tried three CPUs (3770K, 2600K and Celeron G530) - the 2600K and G530 need BIOS revisions after the one that came factory installed (Version 2001).

*Tried lots of memory, which is on the QVL - and tried without memory, all of which caused the 00 code.

*Tried three power supplies - even the one from my main rig.

*Tried system out of the case on the box - no luck.

*A 780Ti (has been working in the rig for a while now) a 6770 and a GTS450

*Tried both BIOS chips - both cause 00

*Tried USB bios flashback, BIOS seems to update OK, but error 00 persists after cycling power and clearing CMOS several times.

*I have inspected the CPU socket for bent pins and all seems OK - have shone a torch on the pins and cant see any bent pins.

I presume the culprit is most likely to be the motherboard as I know all of the components I have tested with are known working items from other computers - I would process an RMA but I cant find my original purchase date - so I cant register it (besides, I have a feeling that it is out of warranty anyway.)

Any suggestions are very welcome :) Cheers for your help.
 

lxwrencus

Reputable
Feb 17, 2015
7
0
4,510
Ive pretty much come to that conclusion aswell, its a shame to see a board of this calibre die - just if I could find my purchase date then I may still be able to RMA, but I cant. Ive tried the board out of the case as you suggest - no difference

Just been out to purchase another power supply as many people online reckon that it can be caused by a defective 8-Pin connector - but still code 00.

I can confirm that the 3770K I am using in the board works as I tested it in a friend's PC about an hour ago...

Never giving up hope! - will post updates as I test