I just built a pc with a Ryzen 5900x with the Asus Crosshair VIII Dark Hero MB and Corsair Vengence LPX 32GB DDR4 3200MHz C16 1.35V Memory. All of my cores are running at 547 MHz. Ryzen Master has 547 MHz listed as the Maximum CPU clock speed. NOTHING changes it! Not reboots, disabling fast boot, changing power balance settings or attempts at overclocking with Asus TPU II (Water cooled PC) or Ryzen Master. No response from tech support yet. Can anybody help me? This is completely unacceptable, at least I still have my old Intel 6700K system to rely on until this gets resolved.
Which Tech Support you have contacted? I hope the Asus Support not AMD, because this sounds like a MB problem in the first place. Have you checked your MB settings and made the config like the MB manual adviced for this CPU? Did you flashed the latest version of your Bios?
I don't think it's the MB, in the bios it is recognized as 4300 MHz. The CPU settings are BCLK 100.00 MHz, Core Voltage 1.001 V, Ratio 43x. My temp is low at 38C. Ram is set to 3200MHz ,voltage 1.496. Asus has an automatic overclock feature called TPM I for air and TPU II for water cooling. I tried TPU II and nothing changed in windows. It says at the boot screen that it's now overclocked at 16% but once I get into windows I'm putting along at speeds I haven't seen since the mid 90's.
Sounds pretty straight forward expect for the voltage, 1.001 V sounds to low for me. I got the 5800X and have around 1.34 ~ 1.36 V (btw. my 3600MHZ Ram runs at 1.35 V). Try to get the Voltage like stated in the Specs for CPU & RAM. And a general tip ist to try a USB Ubuntu just to exclude your OS as the culprit.
So after posting the screenshots, I messed with the voltage on Manual, and setting it to 1 or above seems to take it out of the funky state without having to reboot/power off.
This is very strange behavior. I would be tempted to clear the CMOS (pull the battery out for 10 minutes) and I might even flash the BIOS after that, even if you successfully already flashed the BIOS. Be sure to reset the CMOS.