ASUS P9X79 WS DIAG_CPU LED on(Blue) with NO Q-code error

[jamesmwlv]

I have a ASUS P9X79 WS system that has been working fine for awhile and then in the midfle of a project the system just shut down. I have been reading a lot of the posts and done all the basics. Clear cmos, replace the batery, etc. The one thing I realized after just reading through the owners manual (box was pre configured for a custom application linux system) that the blue DIAG_CPU LED was lit solid. There is no light on the WS 3-color led and no digits lit on Q-Code LEDS. I did the MemOK, test and the DIAG_CPU is the only thing still lit. I then tested the 12Vdc line to the mother board and all were good.

Does this really indicated that my cpu is now toast? Is there a few more things I should test before buying a new cpu?

 

[weberdarren97]

What is your power supply?

Please download AIDA64 Extreme, drop down the Tools menu across the top, hit System Stability Test, check everything except for Local Disk, run the test for ten minutes. Take a screenshot of the Statistics tab every thirty seconds and save it immediately. Please don't wait to save them, save them immediately. This way, if it happens to crash during the test, we'll know what was going on right before it crashed.

Please Note: you may have to make the window taller to fit all the stats on screen at once.

 

[jamesmwlv]

What is your power supply?

Please download AIDA64 Extreme, drop down the Tools menu across the top, hit System Stability Test, check everything except for Local Disk, run the test for ten minutes. Take a screenshot of the Statistics tab every thirty seconds and save it immediately. Please don't wait to save them, save them immediately. This way, if it happens to crash during the test, we'll know what was going on right before it crashed.

Please Note: you may have to make the window taller to fit all the stats on screen at once.

Thanks for the responce.
The power supply is a SilverStone Gold 1500Watt.

I cannot get to the screens you are talking about as the system does not boot. It does not do a bios posts. From what I am reading the bios post boot is stopping at the cpu test.

 

[weberdarren97]

Okay... I would have been less confused if it was included in the original post that the computer was no longer booting properly.

Do you have another CPU that will fit in that motherboard? Do you have another motherboard that can use that CPU?

 

[jamesmwlv]

Okay... I would have been less confused if it was included in the original post that the computer was no longer booting properly.

Do you have another CPU that will fit in that motherboard? Do you have another motherboard that can use that CPU?

Yes, I did fail to include the 'not booting' important detail, my applogizes.
No other cpu or motherboard. I was looking for any other thing to check before going to buy a new cpu. $500 is a lot of cash to spend on a non returnable item. It does appear that it is what I need to do.

Thx

 

[mjslakeridge]

I would take it all apart and carefully inspect the motherboard for any signs of blown capacitors or any other signs that something may have burned out. Then re-assemble it outside of the case. Perhaps a power connection came loose or got some corrosion.

If none of that works, I would take the cpu and motherboard to a repair shop and ask them to try the cpu in one of their compatible motherboards, and one of their cpu's in your motherboard. $500 is a lot to spend when you really don't know the problem.

 

[weberdarren97]

If it works outside the case but not inside the case, then place three pieces of paper behind the motherboard to prevent it from shorting out against the case.