I recently rest Windows 10 installation. Was working fine. But when i used Ccleaner to remove old windows files, it will no longer boot. (Just a blck screen after boot logo, before logon screen). Luckily i have dual boot and able to boot into other Windows 10. No how do i repair my original Windows installation? (DISM?) Update: I tried using 'repair image' in DISM++, but it fails with error "0x800f081f" How to run DISM command to repair windows installation and specify source for files?