x58 won't post with two gpus

[recky031313]

Hey everyone perhaps someone could help me with an issue I've been having. My computer won't boot to windows 10 with two GPU's installed. I recently dusted the case out and switched to a better motherboard and processor. 

Currently running an Evga X58 SLI- LE mobo, a Intel Xeon X5650 six core processor, Kraken X31, 24gb of Corsair DDR3 RAM, two GTX950 SSC, Corsair CX750M PSU, one SSD, and one 2 terabyte HDD, I've done a little diagnosis so far. Started with disconnecting everything except one card in the X16 slot, the ssd (operating system files only) and my AIO connections, and one stick of known good ram; that booted up with no problems. Next I installed my second gpu into the next available X8 slot. It would open up the bios and go through the boot process but would then crash and restart the process. I then un-installed the known good GPU and installed the second GPU into the X16 slot and that booted fine. Where should I look next?

[Christopher_]

I would try updating the bios to the latest version

 

[Recky031344]

ok I will try and update soon thank you

[recky031313]

re-flashed the bios with the latest update; no changes in behavior. I noticed that It is throwing a F3 post error code as well. After going through a list of possible causes my next step is going to be inspecting the cpu pins for faults. 

 

[recky031313]

UPDATE: I inspected the CPU socket and It appears that I have found my problem. I have a couple damaged pins due to my CPU not being correctly seated. looks like I'm switching back to my old board. 

 

UPDATE 2: correctly installed my CPU and other components (including both GPU's) successful boot and operation of system with both GPU's installed. 

Well I learned my lesson learned today, an expensive one at that. Thanks Christopher_ for the advice.