Ram not detected on Asus P9X79

[v8power]

I bought an Asus P9X79 motherboard with cooler and ram, and an E5-1650V2 seperatly. After installing the CPU the memmory led comes on and stays. I then updated the bios via the usb flasback feature. Stil nothing. I've tried some vengeance 1600mhz, some Gskill 2400mhz and then some random old 2gb stick. Same result. After testing with on module and swapping it betwen evrey slot I get a no RAM code on channel A1 and B1 but not on A2 and B2. The memmory led is still on. Reseated the CPU a couple of times, same result. One interesting part is, that the board cycles betwen the ram and cpu led about 2-4 times before stopping at the ram led.
What's more likely to be bad, CPU or motherboard? I don't think it's the board, since i bought from a guy that was selling the board as a bundle with a 4820k. I asked him for just the board cooler and ram.
The CPU is a bit more sketchy. The ebay listing said that it was being sold as the guy needed a chip with lower TDP.

I could buy a 2603 for testing, but what do you think is the problem, CPU or motherboard?

 

[wagex]

from what im reading a ton of people are actually having success fixing the memory led on the asus x79 boards by loostening the motherboard screws.

 

[v8power]

It's out of the case on a cardboard box

 

[wagex]

welp, in that case, it seems that board requires a new bios to support that cpu, can you verify that you have upgraded to the latest version of the bios? most generally the only fix for that issue is to buy a cheap celeron that was available with the original bios on the board and swap the cpu out boot upgrade bios then swap back.

that or the motherboard is bad, im not sure only two ways to find out.

 

[EarthDog]

What version of the bios are you on? It needs 4502 or later to support that cpu.

The 2603 you propose to test with also needs that bios. My suggestion if you were to test would be to get a non xeon cpu to toss in there.

 

[v8power]

The board has bios flashback, so i tried 4801, 4701 and 4502

 

[EarthDog]

I'd bet the cpu then. I'd still get a cheap non xeon to throw in there to test...

 

[v8power]

The cheapest non xeon is stil like 45 euro. I could also send the cpu back under ebays protection program.

 

[v8power]

It's all working now. Turned out to be a damaged trace one corner. After soldering a small bridge everything works. Sitting happely at 4.4GHz @ 1.35V under water