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?
Pretty much this - depending how much surface area and how good the glue is you might get it or you might snap that right off too. If it fails the next step is to carefully drill the screw out. A somewhat riskier operation but itll get it open