USB not detecting in windows 7

USB drives not detecting in windows 7. USB device driver is installing but device is not detecting

If the problem remains as it as,

Method 1

Open drivers folder located in system32 directory,

Open “Run”, press Winlogon button +R and type “drivers” press enter.

Search “USBSTOR.SYS” file

Check its permission, if system doesn’t have full permission, give full permission to system and try again.

Apply -> OK

Disconnect USB drive and connect again and uninstall and install the driver from Device Management.

Method 2

Enable USB from registry.

Check the value of start and WriteProtect in registry. Value of start should be 3 and vlaue of WriteProtect should be 0.

Open Registry Edit.

Open “Run”, press Winlogon button +R and type “regedit” press enter.

Once registry edit is opened go to the location

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\USBSTOR

In the right panel, you can see a DWORD named start, modify its value to 3.

the, go to location

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\StorageDevicePolicies

In the right panel,you can see a DWORD named WriteProtect, modify its value to 0.

Done!