How to remove write protection error from pen drive of 512mb[of kingston make]

On mine there's a small switch on the side but it's pretty old.

Buy a new one...

Method to Create StorageDevicePolicies File:-

Click Start, type regedit.exe and hit ENTER.
Navigate to the following location:
HKEY_LOCAL_MACHINE\SYSTEM\CurrrentControlSet\Contr ol
Right-click Control and select New and Key.
Name it as StorageDevicePolicies and Right click on it
Select New > DWORD and name it as WriteProtect.


Double click on it and set its value to 0 (zero).
Restart your system and this would Disable write protect on USB.