RAM is detected at 2133 by BIOS.
I can change to 2400 or 2666 using XMP profile and base OS appears to be stable.
Also, Passmark memtest86 reports no errors in 4 complete passes when running at 2666.
However, as soon as I attempt to load/install the Ryzen Vega display drivers (tried multiple versions) the system crashes with a black screen (signal still goes to monitor).
On a new OS build running 2666 when installing the drivers I get the black screen crash during driver install.
If I do the configuration with RAM set to 2133 then everything works, but when I switch back to 2666 I get the Windows logon screen for about 2-3 seconds on boot and then it crashes black again in the same way.
I don't understand how Windows seems completely stable and Passmark passes all tests at 2666 but the system crashes when attempting to use the drivers.
Is this really a memory issue? I have some people saying that the APU may be bad - but if that is the case why does it work at 2133/2400?
misterj - No minidump file is being created.
I have confirmed that minidump is enabled and that the directory exists, but nothing is in there.
To be clear I am not getting a BSOD. I am getting a completely black screen.
There is still a signal going to my monitor (as the status light is green not orange).
Windows is definitely going off-line as a continuous ping from a remote machine shows several ping responses between network initialization and when (apparently) the video drivers enable.
Thanks, bengalih. I am struggling at this time and need some more thought. Are you running the latest AMD (DLed from AMD site) and what Power Plan are you using? I recommend Ryzen™ Balanced. Thanks and enjoy, John.
It looks like I was able to get past this by changing my timings to even numbers AND disabling gear down mode (GDM).
I'm still testing system for stability but I am able to boot into Windows and have it initialize the Vega drivers.