How to remove write protection from usb flash-drive?

[yussop]

i have the problem to format sandisk pendrive…the pendrive show the disk write protected…when i follow step make easy to reformat pendrive write into Start > Run > type ‘regedit…bla bla…but my computer can’t see StorageDevicePolicies at the end…so what can i do to  make my pendrive see this word and can format as usual…tq