Yesterday I tried setting PBO through Ryzen Master. Not sure what I exactly did but it started to run a PBO optimizer which runs for about 40 min. Everything was working great temps were low nothing higher than 70c. I went to walk my dog and came back to a black screen and error code 00. It has happened before but I just shut it off a used the Clear CMOS which helped it boot back on. But now It won't post and All I have a is black screen, fans working everything powers on just that dreaded 00 code. I just put in my new 7800x3d CPU Friday.

Not sure what is going on anyone ever had this happen?

Update 2: bios flashback to 3.10 helped to resolve the problem. hope the issue will be addressed in future bios updates.

Update 1: I was running BIOS 3.17 beta (someone who got that bios from Asrock support email posted it here on Reddit) when problems appeared. Then I tried 3.16, 3.18 beta and 3.15, for all 3 versions I was getting code 00. Now tried original BIOS 3.10 that my board came with (there's even a sticker "3.10" on a plate), and I managed to boot into BIOS.

I’m running into a serious issue with my ASRock X870E Nova motherboard and Ryzen 9 9800X3D after performing a CMOS reset. My system was working fine before, but now it won’t boot and is stuck on post code “00” with no display output (even from integrated USB4 and HDMI ports).

My Bluetooth wasn’t working in Windows (no bluetooth in device manager), and I read somewhere that a CMOS reset could fix it after connecting wifi antenna. After shutdown from Windows I pressed the CMOS reset button on the motherboard. After that, my system failed to boot with 00 on the debug postcode display. I tried to fix it by flashing multiple BIOS versions using BIOS Flashback, which appeared successful (flashing light blinked with increasing frequency and stopped as expected). But even after flashing, I still get 00, and my monitor gets no signal. I removed Nvidia GPU, SATA and NVME SSDs and left one RAM stick. Still "00" on the debug display. Placed RAM stick into 2nd slot instead of 4th (4th is the correct one in single stick setup) - got code AA 21. CPU heatsink is cold. NVME drive was warm. Used "bios flashback" button to flashback 3 different bios versions (3.15, 3.16 and latest 3.18 beta) - no effect, still 00 code.

What to do? Currently thinking either CPU or the motherboard died, maybe both. Is there anything else I could figure out before I go through RMA for either CPU or motherboard? I don't think repasting CPU and reattaching cooler could do anything since before first CMOS reset I didn't do anything with my hardware.

My setup:

* 9800x3d

* x870e nova

* Asus ROG STRIX 1000G 1000W

* CORSAIR Vengeance DDR5 64GB (2x32GB) DDR5 6000MHz CL30 CMK64GX5M2B6000Z30

* nvidia rtx 4090

* 990 pro & 980 pro nvme ssd

Hi everyone,

Hopefully this is the right place to ask this, as the title says my home server does not want to boot, with the "dr. Debug" seven segment LCD stuck at "00" (or "DD"), although none of those codes are in the motherboard manual. I cannot access the BIOS either, through HDMI, nor through VGA. I am trying to figure out if I have a dead CPU or dead motherboard?

The parts

I bought a ryzen 5 8600G, and a Seasonic Prime TX-850 PSU. All the parts were bought "new" online. Although, when I received the box of the CPU, the AMD sticker has already been cut and a transparent sticker was put over it. The thermal paste on the radiator had already some pattern on it, and was not nicely flat. So, I wonder if the shop did not resell an RMA'ed CPU. Finally I also bought a DDR5 RAM kit, reference number: CT2K32G52C42U5.

What I did try

I stripped down the motherboard to the bare minimum, with one DRAM stick left, the CPU, radiator and PSU. When I turn the system on, the power LED turns on, and the IPMI hearthbeat LED starts blinking too.

Furthermore, I reseated the CPU twice, checked for any bent pins, reseated the PSU cables in the motherboard, checked the cables were from PSU to the CPU (I connected both 8 pins for the CPU, as the motherboard has two ATX12V connectors. But for completeness, I also tried with only one at the time.)

Lastly, I tried several CMOS reset, even replaced the CMOS battery. But so far, no luck.

Contact with Asrock

I tried to contact asrockrack support, to get some support if I could update the BIOS by any chance while not accessing the BIOS. They told me to connect the IPMI through the network, find the IP through the DHCP on my router, and access it like that. However after waiting 5min, the DHCP did not assign any new IP to the IPMI. I also assigned the MAC-address stickers to a static IP, but still no luck. I tried a BMC external reset, by holding the UID1 button, but no luck either.

Finding the issue

So, with all those trouble shooting steps, I was wondering if anyone has any idea for me to test? If not, I was thinking of returning the CPU, as it arrived in some shady condition, in my opinion. But I was hoping I could do some conclusive test to rule out what was component is actually broken? (Unfortunately, I don't have access to any spare CPU or motherboard to test with.)

I have reached out to ASRock CS, but wanted to ask here in case I am being stupid and missed something obvious.

I got the X870e NOVA back at the end of December and has been using it with the 9800x3D with no issues for half a year now. I know there has been lots of issues being discussed, but I was hoping I wasn't going to hit anything since it has been fine for so long now.

I put my computer to sleep this morning and when I came back from work, the computer didn't resume. Restarted it and see that the code is stuck at "00." Googling and other post seems to say it is a CPU issue, so I reseated the CPU (no external damage, no bent pins) and still not working. I was on BIOS 3.15 or 3.16, and tried updating to 3.30, which didn't fix it.

Again, seeing if someone else got something else I missed, or if I need to wait for ASRock. Or if this may be a CPU issue (don't have another CPU to test with) and I'm out of luck...

I power the computer with only a CPU and 1 ram stick and there is nothing booting on the monitor, it only has a black screen. What is going wrong with just a CPU and ram booting all together?

I often see posts where Q-Code 00 is immediately treated as a dead CPU—especially among ASRock users. But based on my recent experience, I’d recommend staying calm and trying a few things first.

While stress-testing my 9800X3D and G.Skill CL26 RAM (1.40V), I hit Q-Code 00 multiple times when pushing the limits. A simple CMOS reset? Didn’t help. But what I consistently noticed was this:

All memory profiles in BIOS were suddenly blank, and even EXPO wouldn’t apply. The fix? Manually re-enter the correct RAM timings (don’t trust Auto—they were way off in my case), and save + reboot.

Bonus tip: after a successful boot, shut down, flip your PSU switch off, and tap the power button a few times to discharge. This clears out any lingering issues that could cause false Q-Codes.

If your board lacks a postcode display, I get how this could look like a fatal error. But it might just be the RAM training going sideways. Try this before sending in an RMA.

System used:

CPU: 9800X3D

GPU: ASUS Astral 5080 OC

Board: NZXT N9 X870E Extreme (a.k.a. ASRock Nova in disguise)

RAM: G.Skill Trident Z Neo 2×16GB DDR5-6000

Timings: CL26-34-34-70 @ 1.40V

Command Rate: 1T, GDM Disabled