I decided on cleaning my laptop fans today, which I’ve been procrastinating for about a year now because of this one screw. But I just can’t seem to open this with my screwdriver, since whatever I did back when I last opened it it’s nearly circular now. Is there a way to unscrew this?
Seconded. I’ve loosened many shredded screws this way.
Also, one can use a hack saw or similar to cut a slit into the screw head, that way you’re more or less guaranteed to fit a flathead driver properly.