Hi there,
to remove write protection
follow these steps:
Press Start -> Run, type regedit, press Ok
Click on My Computer
Then press File -> Export, give some file name to backup the registry. Just incase you ever need to rollback
Navigate to HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Control/StorageDevicePolicies
In the right pane select "writeprotect"
RESET the value to '0'
Thanks