1. go to regedit Regedit
2. go to directory HKEY_LOCALMACHINE\SYSTEM\CurrentControlSet\Control\
3. right click on the folder Control and choose New -–> Key
4. rename as “StorageDevicePolicies”
5. right click on that and then choose New –> Dword
6. named “WriteProtect”
7. double click on the Dword named “WriteProtect” , and then change the Value Data into '1'
8. after that restar your computer,,
to make it able(able copy paste again,,) just change 1 into 0,,