USB driver failure in win 7

I have a problem with win7 USB driver and it no longer install new USB disks. I have no infcache.1 file anywhere on my windows directory and after checking the setupapi.dev.log, I faced this error msg triggered for any attempt for a USB recognition:

>>>  [Device Install (Hardware initiated) - USB\VID_0000&PID_0000\5&1dd99672&0&1]
>>>  Section start 2017/01/31 18:12:47.896
     ump: Creating Install Process: DrvInst.exe 18:12:47.904
     ndv: Retrieving device info...
     ndv: Setting device parameters...
     ndv: Searching just Driver Store...
     dvi: {Build Driver List} 18:12:48.074
     dvi:      Searching for hardware ID(s):
     dvi:           usb\unknown
     dvi:      Searching for compatible ID(s):
     dvi:           usb\unknown
     cpy:      Policy is set to make all digital signatures equal.
     dvi:      Enumerating INFs from path list 'C:\windows\INF'
!    inf:      Detected INFCACHE inconsistency
!    inf:      Attempting INFCACHE repair 18:14:48.141
!!!  inf:      Unable to fix INFCACHE - likely system corruption!
!!!  inf:      Error 32: The process cannot access the file because it is being used by another process.
     ump:      Server install process exited with code 0x000005b4 18:17:48.077
<<<  Section end 2017/01/31 18:17:48.079
<<<  [Exit status: FAILURE(0x000005b4)]

maybe it will be interesting for you to know that when I run pnputil -e in cmd I get very same error: "The process cannot access the file because it is being used by another process"

Appreciate any solution, in advance.

You need to delete the INFCACHE.**1 file from **C:\Windows\System32\Driver Store . The file has become corrupted and inconsistent with the data found in Windows\Inf.

You need to alter permissions to delete it. Click on it, Properties, Security tab, Edit and Add. Add the group Administrators. Now you can delete it.

Restart windows. When you connect a new device, the infcache will be re-created. Make sure not to connect the one that generated the problem. Let the infcache be created by connecting another device and then you can use the problem one too.