Unknown files?

After a very, very long time I got back to the old laptop to make it quick and clean. However, he has these strange files in C: which I can't delete or open. What can you do?

These weird files?

Which?

Sry forgot to add the picture

I forgot the picture

Preferably:

format c:

and then set everything up again

in the garden you can dig completely in spring

Yes, I've already considered doing it. Maybe set up windows again.

Well… After format c: that would be the next conceivable step