Check to see if it has a physical switch for read-only.
If not or if it's not set to read only, the drive may be bad. You can try doing it in Linux, make a Linux Live boot disk, boot off it and try formatting it.
Check to see if it has a physical switch for read-only.
If not or if it's not set to read only, the drive may be bad. You can try doing it in Linux, make a Linux Live boot disk, boot off it and try formatting it.