Question Red CPU_LED and '00' Q-CODE on ASUS X99 - DELUXE Motherboard?
Question Red CPU_LED and '00' Q-CODE on ASUS X99 - DELUXE Motherboard?
Hello everyone,
I put together a computer in 2016/2017 during my school years.
Its setup includes:
Motherboard: Asus X99 3.1 Deluxe (MANUAL)
Processor: Intel i7-5820K
Intercooler: Corsair H110i GT
GPU: Asus GTX 750 Ti 4GB OC
RAM: Corsair Vengeance LPX 32GB (4x8GB)
SSD:
1x Crucial MX 500 1TB
1x Crucial MX 500 250GB (dedicated to OS)
OS: Windows 10 Pro
PSU: Corsair HX1000i
For a few days ago, everything worked fine, but now it won’t start at all.
The Q-CODE display shows the code '00', and I noticed the CPU_LED on the motherboard is red.
I found a thread about this issue, but it was already closed, so I had to open a new one.
In my experience, there’s no obvious short circuit—everything powers up and stays active until I shut down the machine.
I disassembled the processor to check for any damage, but didn’t find anything.
I replaced the thermal paste and reassembled it.
I know this build is old, and from a practical standpoint it doesn’t make sense to spend time fixing it.
Still, I wanted to investigate further and resolve the problem.
You can watch the video here for more details.
Welcome to the forums, newcomer!
PSU: Corsair HX1000i
This device is eight years old...?
I disassembled the processor just to check for any signs of damage, but I didn’t find anything. I replaced the thermal paste and reassembled it.
Did you remove the CPU from its socket or also detach the heat spreader? If the latter, make sure you didn’t dislodge any parts from the chip itself?
https://dlcdnta.asus.com/pub/ASUS/m...Ex...1764509870&Key-Pair-Id=K2ITB7O97XKKCX
Refer to page 3-63, section 3.11.3 of Asus CrashFree BIOS 3; try to recover the BIOS and get your system running again. Alternatively, you could use a CH341A BIOS Programming toolkit to re-flash the BIOS. If that doesn’t work, consider using another motherboard with the same chipset and BIOS version to compare behavior.
Moved this thread from the CPUs section to the Systems section.
Hi
@Lutfij
Thank you for your interest in this matter.
Yes, everything functions properly without any obvious issues. The main hardware changes I made were swapping out the hard drives to SSDs, nothing else was altered.
I removed the CPU from its socket, checked for any abnormalities, and reinstalled it along with replacing the thermal paste. There has been no change in the original problem. I didn’t cause any damage during the process.
I’m unable to access the BIOS; when the system powers on, the screen stays black. It looks like the processor is not working. The motherboard can’t start the BIOS without a CPU installed. The boot process needs the CPU to run initial diagnostics and launch the system. Without it, the system cannot proceed past the power-up stage and the BIOS isn’t reachable.
Make sure you have a CPU in place before attempting to boot. Without it, there’s no possibility of achieving any meaningful results. You also need a motherboard, memory, and a video device to function properly. These are the essential requirements, plus power.
Disconnect all disk usage using one RAM stick in slot D1.....test. If no assistance is received, attempt a different RAM stick in slot D1....test.
Hello
@Bob.B, regarding RAM connection to a CPU issue, in the POST there is an LED specifically for RAM problems, and everything seems normal.
It is uncommon for an Intel processor to malfunction, though it remains a chance.
Since the issue occurred before you took the CPU out of the socket, bent pins are less likely.
I suspect the problem may lie with your cooler.
A motherboard won’t power up a processor if it can’t sense a working cooler.
After ten years, an AIO is beyond its prime.
The mechanical pump probably failed.
Try locating an air cooler compatible with the LGA 2011-3 socket:
Noctua offers one:
https://www.noctua.at/en/compatibil...-i...12#details
Hi
@geofelt
It's odd since my cooler seems to be functioning correctly; everything worked well until recently. As shown in the video I attached, when I power it on, the LED labeled CORSAIR lights up green. If there were any issues, it would turn red. (I believe)