If you get careless, go where you shouldn't go and mess up the operating system, don't have a recovery USB key and instead replace the corrupted C: drive card with a backup, be aware that a little screw which you remove to allow the card to be withrawn, passes through a concealed tiny black pillar washer or sleeve which rests between the circuit board and support frame.

If this little washer or sleeve slips out when you remove the screw and you later re-insert the screw and tighten down with the black washer missing, you will bend and may damage the circuit board.