Forget windows, can you boot from that A:?
Is it enabled in the BIOS?
Does DIR A: in a command window show it?
I had to remove a floppy disc that came apart inside. now a drive is not there. I replaced old one, but new stay lit. It does not appear on My Computer, even tho I deleted it on devise mgr and replace it on add new hardware. I defrag, scan disk and purchased pc doctor, but nothing has made it reappear. what next