I got a free computer from a friend who said it had start up problems. So I took it home, set it up, and tried turning it on. It comes on, shows a Dell screen for half a second, then tells me to insert boot diskette into floppy drive 1. I don't have a boot diskette. And I'm not even sure what OS it's running. The sticker on the side says it runs ME, but he could have upgraded it to 2000 or XP. I doubt it's XP because he never had an XP computer, so it's either ME or 2000. Can anyone help?