Still doesn't work. Says access denied, even as administrator. I also tried renaming through windows explorer, btu says files ar currently in use.
However, I was able to get that latest update to fully install by deleting the hidden "$WinREAgent" folder in C: drive.
Unfortunately, after rebooting the PC after the update was completed and using windows for a while, I got the "Driver Power State Failure" again, and after a couple failed reboots it restored me back to the PC state before the new Window Update installed.
So, I don't know what the heck is up. Not sure if my issues are related to this metadata staging failed error, or something else altogether. Might be hardware issue?
My system is running fine on Windows OS build 22631.3007.
Looks like I'm staying on that until further notice.