E Mail Else Como Usar Windows 7

I reinstalled Windows 98SE on my Dell Latitude D600 and am facing just one issue. I was trying to extract K-Meleon 75.1 into a folder from 7-zip I get an error "Cannot Copy file: File System Error (1026). This error doesn't only happen with my K-Meleon file, but most files opened in 7-zip or WinRAR as well.

Any fixes for this?