Hi
right click on your computeur Icône manage / manage DD you have the liste of your DD .
and are you the administrator of your PC ?
on C:/ right click/ properties / sécurity/ user /(XXXPC/User all are tick ? also if not click on modify go on user /(XXXPC/User tick the first case to have the rights and apply wait for upgrading click ok on all popup advertissement windows and ok when is finish .
also if you have SSD need in your bios SATA all SSD are in AHCI .
and be carrefull when you eject an USB key to don't eject your SSD C:/ when you use it ...
Patrick