Quoted from PinMonk:Also, does the problem happen if you boot into Win 10 Safe Mode (where it loads the bare minimum of drivers to function)?
Tried this a few times. It does happen right at startup in safe mode, then it seems to be good for a while, then--this is slightly different than regular mode--taskbar freezes but I also can't get the mouse to click on anything in browser or file windows for 15-20 seconds, then that frees up and it's just the taskbar that stays frozen. It doesn't do that in normal boot.