[SOLVED] Dual X5660 no post

[baron623]

Hello,

I have two X5660s and a Tyan s7012. I had some issues getting it to post but was able to get it to post with a single X5660 installed. When I install the second, the system fails to post. I have updated the bios to the most recent revision. A green light blinks near the second cpu socket. I've tried multiple ram configurations, I have tested both processors on the socket without the blinking green light. The system turns on immediately when a cpu is installed in the socket that is not working. There are no beeps, or codes from the display

 

[COLGeek]

Are the 2 CPUs the same revision? Also, are the socket pins in the second socket all intact (none missing or bent)?

 

[alexoiu]

Can you post a picture of the board?

 

[baron623]

I examined the second socket and all the pins appear to be in tact. I don't think the revision is an issue considering the board will not post when using only that socket.

 

[COLGeek]

What is the make/model of your power supply? Also, from where did you get the motherboard? Was it pulled from a known working system (with 2 CPUs)?

 

[baron623]

The motherboard was pulled from a server with two CPUs, I'm not sure what CPUs, most likely the 5500 series. The first thing I did after seeing this issue was update the bios because I heard people had issues like this with older bios versions. The power supply is an EVGA supernova 750 G2

 

[alexoiu]

I can't see well, but I assume that both 8 pin power cables are connected?

 

[baron623]

yes, one is hiding under the heatsink for cpu1, and the other is in the very back right corner. I have also tried clocking the ram down to 1066MHz from 1333, but that did not work either

 

[COLGeek]

Is the BIOS accessible when both CPUs are installed?

 

[baron623]

No, when both cpus are installed the hex display on the motherboard doesn't even give an error code. Fans all spin though. After a few moments a solid green light next to the socket starts to flash

 

[COLGeek]

It appears that you have less memory installed on one side than the other (in the picture). If you match the memory on each side, does it make a difference?

 

[baron623]

before I only had one stick installed in each, I have tried, one in each, two in each, and different dim slots

 

[COLGeek]

Are you using ECC or Registered DIMMs or "regular" PC memory?

 

[baron623]

I'm using a 32GB (4 x 8GB) kit of Hynix PC3L-10600R DDR3 REG-ECC

 

[alexoiu]

It looks like a board issue, in my opinion. If new, try RMA-ing it.

 

[COLGeek]

It looks like a board issue, in my opinion. If new, try RMA-ing it.

I tend to agree. This is likely a motherboard defect. As this is an older device, it is likely no longer under warranty.

Is the BIOS running in its default state, or have you been modifying settings?

 

[baron623]

The only thing that I changed was the ram clock. I can try failsafe and default settings once again.

 

[baron623]

I'm going to take the board out of the chassis and test one last time, I'll add a few pictures

 

[baron623]

well, out of the chassis issues persist so I guess I'll just return the board and try my luck with another lga1366 board. Maybe another Tyan S7012