Windows 8 computer doesn't recognize any flash drives

Title says it all.

Flash drives in the various USB slots do nothing yet other devices in the USB slots work.

Dev manager looks fine.
Sheldon LivingstonConsultantAsked:
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Michael FowlerSolutions ConsultantCommented:
Try reinstalling the USB port drivers.

Just to be safe, create a restore point.
Close all running programs.
Open Device Manager.
Once in Device Manager, go to the Universal Serial Bus controllers section.
Right-click the first listing and select Uninstall. Repeat for all of the others.
When you're done, reboot. Windows will automatically reinstall the drivers.
JohnBusiness Consultant (Owner)Commented:
Also run System File Checker. Open cmd.exe with Run as Administrator and run SFC /SCANNOW twice. Close out, shut down (power all the way off) and start up again. Any change?
Sheldon LivingstonConsultantAuthor Commented:
Deleted all USB controllers... no joy.

Running SFC now.
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Michael FowlerSolutions ConsultantCommented:

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Sheldon LivingstonConsultantAuthor Commented:
SFC... funny:

Windows Resource Protection found corrupt files but was unable to fix some of them. Details are included in the CBS.Log windir\Logs\CBS\CBS.log. For example :\Windows\Logs\CBS\CBS.log. Note that logging is currently not supported in offline servicing scenarios.

CBS.log contains 27,115 lines.

Will look at Michael74's suggestion...
JohnBusiness Consultant (Owner)Commented:
Try running SFC twice (maybe even 3 times). It cannot always correct all issues.

Another repair tool for Windows 8 to try is DISM.

Open cmd.exe with Run as Administrator.
DISM.exe /Online /Cleanup-Image /Scanhealth (takes 15 - 20 minutes).
DISM.exe /Online /Cleanup-Image /Restorehealth (takes 15 - 20 minutes).

Restart the computer and test
Sheldon LivingstonConsultantAuthor Commented:
It appears that Michael74's suggestion worked!  I now have a functioning USB drive.
Sheldon LivingstonConsultantAuthor Commented:
Worked!  Thank you.
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