ASUS X99A-II Q-Code 00 Red CPU LED (after 2 weeks of operation)

[Dar_BB]

I had a friend who builds and maintains computers help me with the following install, which worked right away:
1. ASUS X99A-II
2. 6800K CPU
3. Corsair Vengence LPX 4 x 8 GB DDR4-3000
4. BeQuiet Dark Rock Pro 11 650W PSU
5. BeQueit SilentWings 280mm AIO
6. 1 SATA SSD + 2HDD + 1 Intel 600p M.2
7. MSI Gaming X 1080
8. Fractal Design R5 case

The system worked for about a week and then shut down and stopped working. I noticed that the main 24pin power connector was not "clicked" and must not have been seated properly. After reseating it and hearing the click, the system worked again ... for about a week. Until Today, when Qcode 00 appeared and the system wouldn't start-up. Case and CPU fans turn. The CPU warning LED next to the 24-pin is red. I have not done anything else other than reconnect/reseat each of the power connectors (24PIN, 8PIN and 4-PIN) with the system off. I have not taken a multimeter to any of the power connections, so I cannot say if it is PSU, MB or CPU.

Could the poor power connection in the first week cause any damage?

I would like to know if there are any tests or operations I can do to diagnose the issue. Tomorrow, I will re-run the cabling from PSU to MB, but I am not expecting this to help much. I will call my friend too.

There is an OV switch on the PSU, which I had enabled for the first week. This week I disabled it. The manual for the Dark Power Pro is not very good and suggested to only use it if it is needed. I just said that I should not switch it under power, which I did not.

 

[Dar_BB]

I should point out that the computer was in standby mode, when it stopped working. For the previous times that it stopped working, it was also in standby. I did some reading and saw that others have had similar issues with the ASUS x99 boards. Any ideas?

 

[eeek5127]

I have this same issue. I RMA'ed the board- Asus returned it with no fault found. My next step is power supply. Did you find a fix?

 

[Dar_BB]

Sorry for the late reply. My issue turned out to the the CPU. I sent it and the MoBo back to the reseller, where they sent me a new CPU but the original MoBo. I tested the PSU myself using a multimeter and it was fine, so this was unlikely the problem. I also had a high-end PSU. I guess few people talk about the CPUs failing, but I think it does happen.

I now have my system running at normal clock-speed because I want to get some miles under my belt before I overclock. It appears to run my own software just as fast as before because the memory is running at full speed. Before the ASUS bios software would always drop the memory down when I overlocked. Hence, I am not in a rush to do the OC. Fortunately, none of the problems that I had before (with the computer dying in sleep) are happening now, so it really does look like I had a bad CPU.

I hope that this helps.