Con windows 7 è più semplice usare sfc/scannow .
Per visualizzare gli eventuali errori in sfc segui qui di seguito:
1-Open an elevated command prompt as described in the previous step 1.
2-At the command prompt, type the following command, and then press ENTER: findstr /c:"[SR]" %windir%\Logs\CBS\CBS.log >"%userprofile%\Desktop\sfcdetails.txt"
3-Note The Sfcdetails.txt file contains details from every time that the System File Checker tool has been run on the computer. The file includes information about files that were not repaired by the System File Checker tool. Verify the date and time entries to determine the problem files that were found the last time that you ran the System File Checker tool.
4-Open the Sfcdetails.txt file from your desktop.
5-The Sfcdetails.txt file uses the following format:
6-Date/Time SFC detailThe following sample log file contains an entry for a file that could not be repaired:
2007-01-12 12:10:42, Info CSI 00000008 [SR] Cannot
repair member file [l:34{17}]"Accessibility.dll" of Accessibility, Version =
6.0.6000.16386, pA = PROCESSOR_ARCHITECTURE_MSIL (8), Culture neutral,
VersionScope neutral, PublicKeyToken = {l:8 b:b03f5f7f11d50a3a}, Type
neutral, TypeName neutral, PublicKey neutral in the store, file is missing.
Comunque se non risolvi e l'errore riguarda il file usbhub.sys.mui guarda qui: altrimenti disinstalla l'aggiornamento KB4041686...
Ciao