• go to Run

• type regedit.

• Navigate to the following registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control

• Right click on control and create new key.

• Name it as StorageDevicePolicies . (Copy and paste it from here if possible)

• Now click on StorageDevicePolicies and in right side pan right click and select create new dword and name it as WriteProtect.

• on it and set its value to 0.

Now restart your machine and try copying some files to your card.