Mine was pre-windows - pure dos system but forget which version (but deff pre-Dos6). I was on a cobol programming course (summer of '85) and they gave us one of the first 'laptops' with a b/w screen (I think it was LED?) with dual 3.5 inch floppy drives. LOL Sorry I cant remember any other specs, but probably about 256k ram or something silly like that and certainly no hard-drive. I REMEMBER THINKING HOW AWESOME IT WAS!