Windows Upgrade Help and more

Same here. Also, is your disk partition style GPT and not MBR?

Can confirm. You could also try a clean boot to see if background apps are reserving too much memory, then run the check again.

From what I've seen, That's a common glitch after an upgrade. First, try running the Activation troubleshooter again, but this time choose the "I changed hardware on this device recently" option. If that fails, you might need to use the Activation support phone number from Microsoft—they can often ...