USB PORT NOT WORKING

USB PORT NOT WORKING

Problem: Not detecting USB printer, Pen Drive etc.,

Symptom:

1. Check whether USB/Chipset driver installed properly or not.

2. Check whether you are logged in with Administrator account

3. If not log in with admin mode and check

4. Check with any other Pen Drive or connect this pen drive to other machine

and check

5. If it is working with other machine then need to check registry checking.

6. Connect USB Mouse or keyboard and check whether it is working or not

Note: In Windows Registry there is a option to Enable/Disable USB Port and if we disable

USB port in Registry still USB Mouse and USB Keyboard will work but Pen Drive and other

USB devices will not work.

In the above picture if Value is 3 then you can access USB Drive and if it is 4 USB port will

disable and still you can use External USB Mouse and Keyboard.

Path to Check this:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR

Note: Also some times USB Pen drive will detect in My Computer but when you want to

access or delete some files from that it will show as Write Protected even that Pen Drive is

enabled with write permission.

Solutions: Go to Registry and check below path.

By default the value will be 0 but some time because of registry/os error this value will change

to 1 and at that time you cannot write file on Pen Drive or any other external USB storage

devices.

Path to Check this:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\StorageDevicePolicies