Hi all, I've had my computer for several years now. About a month ago I started having issues. Upon rebooting, the computer wouldn't post and I would get 6 beeps on the motherboard. Dr. debug gives me a 4F code followed by d0. D0 is listed as CPU initialisation error in the manual. After giving it some rest and coming back, the computer turned on. I've had no issues when the computer is on, but every time I restart, I'd have the issue again. Today I had to restart and I can't get it to come back at all. Same errors as before.

I've taken it all apart and disconnected everything except the CPU and one stick of ram and I still get the same code. I'm wondering if either the CPU or the motherboard is done for.

I can't remember all the specs, but I'll list them the best I can: ASRock Z77 Extreme4 Intel Core i5 (can't remember model) Corsair HX620W modular power supply 4x G.Skill RipjawsX DDR3-1600 4GB Gigabyte Radeon HD 7950

I'm not sure where to go from here. I haven't changed anything that would affect this. If anyone has any ideas on how to get it up and running again, I'd really appreciate the help

I just finished building my first pc (specs below) and when I went to POST for the first time, the mobo read the error code above. After researching, I was able to find a forum here suggesting that I might have either tightened down my water cooler too much or bent some pins on the cpu/mobo. After checking, it appears that the pins on the cpu/mobo are fine and I have also tried loosening the water cooling, but I’m still running into the issue.

CPU: AMD Threadripper 3960X 3.8 GHz 24-Core Processor CPU Cooler: Thermaltake Water 3.0 Riing RGB 360 40.6 CFM Liquid CPU Cooler Motherboard: ASRock TRX40 TAICHI ATX sTRX4 Motherboard Memory: G.Skill Trident Z RGB 128 GB (4 x 32 GB) DDR4-3600 CL18 Memory Storage: Samsung 970 Evo 1 TB M.2-2280 NVME Solid State Drive Storage: Intel 660p Series 2.048 TB M.2-2280 NVME Solid State Drive Storage: Seagate IronWolf Pro 16 TB 3.5" 7200RPM Internal Hard Drive Video Card: Asus GeForce RTX 2080 SUPER 8 GB DUAL EVO OC Video Card Case: NZXT H710i ATX Mid Tower Case Power Supply: Corsair HX Platinum 1000 W 80+ Platinum Certified Fully Modular ATX Power Supply Operating System: Microsoft Windows 10 Home OEM 64-bit

Hey everyone, I’ve been trying to get my new server to boot for days now and I’m completely stuck. Maybe someone here can help me figure out what’s going on.

Motherboard: ASRock X570D4U

CPU: AMD Ryzen 9 5950X

RAM: Mushkin MPL4E320NF32G28 (ECC UDIMM, 32 GB modules)

PSU: Corsair RM850x

Cooling: Be Quiet! Dark Rock Pro 5

My Issue

When I start the PC with one RAM stick in the first slot (A1), I get error code 10. When I put the same RAM stick in the third slot (A2), I get error code D0. The system doesn't reach the BIOS no video output, fans keep spinning, IPMI stays reachable but the system itself won’t POST.

What I’ve already tried

1. Tested all RAM slots individually with a single stick (tested also with bin Ecc)

2. Reset CMOS multiple times (removed the battery for several minutes)

3. Updated BIOS via IPMI to the latest version available from ASRock

4. Removed and reinstalled the CPU, checked for bent pins or visible damage

5. Tested with an older CPU (Ryzen 5 2600) → this time it actually got further, and I got Debug Code F2 (Memory initialization error) instead of D0

6. Verified PSU connections

I have no idea what else I can do. I bought all the components new, so they should Work corectly. Perhaps someone is smarter than me and has an idea.😭🙏🏻

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