System wont post - 00 code

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   Hi there, 

4 years ago I have build my system using below equipment: 

- MB: Ashrock Z390 Phantom Gaming 9 
- CPU: Intel i9 9900K
- Cooling: AIO Cooler Master 
- Ram: 32gb ram DDR4 Corsair Vengeance LPX 2400Mhz
- PSU: Corsair CX750M 750w 
- GPU: (Updated) Radeon 6700 XT
- M2 1TB drive 
- Seagate 3TB HDD 
- 2 x 512 SSD random vendor 

Yesterday, I have turned my PC off (Shut down) as usual and today when I tried to turn it back on the whole PC is dead with the code displaying OO. 

Troubleshooting i have done so far: 
- cleared CMOS (with the method provided on this forum) 
- removed parts (3 x ram, GPU, drives) 
- checked PSU with shorting method - works 

My question is, what else I can do to fix the issue of to troubleshoot more? 
CPU was not overclocked and it was working fine for the past 4 years. 

Any help would be awesome. Thanks

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Blaze600 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 15 Jun 2023 Location: Australia Status: Offline Points: 20	Post Options Post Reply Quote Blaze600 Report Post Thanks(0) Quote Reply Topic: System wont post - 00 code Posted: 15 Jun 2023 at 9:14am
	Hi there, 4 years ago I have build my system using below equipment: - MB: Ashrock Z390 Phantom Gaming 9 - CPU: Intel i9 9900K - Cooling: AIO Cooler Master - Ram: 32gb ram DDR4 Corsair Vengeance LPX 2400Mhz - PSU: Corsair CX750M 750w - GPU: (Updated) Radeon 6700 XT - M2 1TB drive - Seagate 3TB HDD - 2 x 512 SSD random vendor Yesterday, I have turned my PC off (Shut down) as usual and today when I tried to turn it back on the whole PC is dead with the code displaying OO. Troubleshooting i have done so far: - cleared CMOS (with the method provided on this forum) - removed parts (3 x ram, GPU, drives) - checked PSU with shorting method - works My question is, what else I can do to fix the issue of to troubleshoot more? CPU was not overclocked and it was working fine for the past 4 years. Any help would be awesome. Thanks

threadzipper1957 Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 05 Mar 2022 Status: Offline Points: 9365	Post Options Post Reply Quote threadzipper1957 Report Post Thanks(0) Quote Reply Posted: 20 Jun 2023 at 11:15pm
	A code 00 usually means, a defective CPU. Remove all hardware, and check the CPU socket pins, than mount the CPU cooler, but don't tighten it, and 1 memory module, and of course both PSU cables, wired USB keyboard and mouse, and a monitor. Or use the tech support form https://tw.asrock.com/events/tsd.asp And check the spam folder for replies
	Kind Regards

torang Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 22 Mar 2025 Status: Offline Points: 30	Post Options Post Reply Quote torang Report Post Thanks(0) Quote Reply Posted: 22 Mar 2025 at 7:10pm
	I have the same problem asrock z87 extreme 4 ram 8g 1600 cpu i5 4570 gpu gtx1060 After using this motherboard for a one years, this problem happened. When I turn off the power (turn off the standby key) and restart the system, I encounter code 00. It's a strange problem. I didn't have such a problem with Asus motherboards. The only temporary solution: I turn off the system and press the cmos clear key. A few moments later, the system turns on by itself and the code 00 disappears. This is a temporary solution. After a few days, code 00 occurs again Support has not given me any solution so far