The problem disc is write-protected

The problem disc is write-protected :

the first solution :

If the flash disk lock button which must be placed in a case UNLOK

If there is no lock button turn to the second solution :

1- press the start button 

2- select Run from the menu

Then we write the following command

regedit

Then OK .

Go to the next track

HKEY_LOCAL_MACHINE/SYSTEM/

/CurrentControlSet/Control/Session Manager

On the right  ProtetionMode

Click the right mouse button

Click change 

change the value 1 to 0 

restart your computer 

good luck...