I am having the same issue on a laptop. When I shutdown and reboot it takes less than 1 min to get to the desktop. If I restart, it is on the W10 logo wait screen for a LLLLLLLOOOOOOOOOOOGGGGGGGGG time. fast start is enabled. i have run chkdsk /f no chg I started in diagnostic mode = no chg Going on 20 minutes for this restart and not there yet..........finally, maybe 30 min I guess if I disable fast start it will take a long time on a cold boot also. Obviously then, something is taking a very long time to load. That something must be a system component. how to track it down?