Chosen Solution
I have screws and don’t know how to remove them to repair my calculator
filoufelix81 those are indeed weird. If you are sure those are screws and not rivets, I suggest a small pair of vise grips. Tighten those around the top of the screw and see if they budge. Anything after that would be a drill or a Dremel. Of course you could always use a Dremel and grind a slot for a screwdriver into the head
