Hello there !
Here step by step !
1.Start Menu > Run > cmd.exe
pic: http://i.imgur.com/Qr4Mg5X.png
2.In cmd type diskpart
pic: http://i.imgur.com/a5nhUgL.png
3. Then in the next command type list disk
pic: http://i.imgur.com/7QfIBhp.png
4-5. Then type select disk 1 and then type Attributes disk clear readonly
pic: http://i.imgur.com/mUH74HW.png
Done! Now you can now use your usb pendrive smoothly :)
Here step by step !
1.Start Menu > Run > cmd.exe
pic: http://i.imgur.com/Qr4Mg5X.png
2.In cmd type diskpart
pic: http://i.imgur.com/a5nhUgL.png
3. Then in the next command type list disk
pic: http://i.imgur.com/7QfIBhp.png
4-5. Then type select disk 1 and then type Attributes disk clear readonly
pic: http://i.imgur.com/mUH74HW.png
Done! Now you can now use your usb pendrive smoothly :)