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I upgraded from Windows 8 (not 8.1) to Windows 10. I have a high percentage CPU usage on System interrupts, about 5%.

I'm able to shut down restart and sleep, but when I sign out I get a black screen and keyboard stops working (num-lock caps-lock). If I try to switch users instead (win+l to lock and then select different user) It just spins forever on login.

One user is admin other is standard. It doesn't matter which user I log in as, neither can successfully sign out or switch to the other user.

Please help! Thanks

TechnoCore
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  • You performed a clean install from Windows 8. So I wouldn't be shocked if your installation was not actually activated. I suggest you revert back to Windows 8, perform the upgrade to Windows 8.1, then upgrade to Windows 10. – Ramhound Jul 30 '15 at 15:38
  • It's not a clean install, upgrade install from 8 to 10(kept programs and files). [It's a volume license of Windows 8 not eligible for windows 8.1.](http://superuser.com/questions/662736/what-is-the-easiest-way-to-upgrade-to-windows-8-1-if-you-cannot-do-it-via-the-wi), It says it's activated on Windows 10. – TechnoCore Jul 30 '15 at 15:54
  • I can only share what I know. The system requirements for a Windows 10 upgrade is suppose to be either Windows 7 SP1 or Windows 8.1 Update. I don't feel like trying to find the chart currently. Have you ran SFC and DISM by chance? – Ramhound Jul 30 '15 at 15:59
  • sfc and dism found no errors. I also created a new user account to see if something in the existing accounts was corrupt. Same result though, even a brand new account still freezes on sign out. – TechnoCore Jul 31 '15 at 17:17
  • Which version of Windows 10 are you using? You can use command 'ver' to check your version. Is this question still valid? – Vita Oct 12 '16 at 20:23

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I have the same issues with a desktop at home and workstation in the office. I have found if I RDP into the workstation I am able to login without and problems. When I disconnect the RDP session the login screen returns on the host computer. This is certainly not a solution, but it saves on the hard reboots.

MGB
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Perform a Fresh install of Windows 10 Latest (1803 - April Update) Download From Here

Yasiru Nayanajith
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I was able to get back to a log in screen by doing a cold boot. That got old fast so I tried a warm boot to switch users and that seems to work well.

Not the solution I wanted but at least we can switch users several times a day with a warm boot. Each user must save their files before switching users.

I say Reinstate Monica
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John Goodrich
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