I have a very old computer, which had windows 3.1 installed (worked fine). I wanted to install windows 98, so i used a win98 startup disk to fdisk the hard drive. That went fine, but when the computer restarted, it wouldn't open the a: (win98 startup disk), but gave a message "missing operating system." I cant access the bios either, by pressing the delete key. What can i do? thanks.