So I pretty much gave up on the computer with the monitor problem. This other computer I got has this little problem with saying there is a nonsytem disk or disk error when I start it up. Ive tried multiple HDDS and one other floppy I even tried taking the floppy out. I just want to know what is making it think that there is a disk error... None of this is making any sense to me. Ive built computers before and these two are really getting on my nerves I've never had a problem like this before that I wasn't able to resolve simply. Ive tried everything I know to correct these problems and nothing I do or my friend seemes to work. So if you know why it would be displaying Disk error please assist me.

(About to drive up to the mountains and throw these Computers off)
Blazed

There are a few possibilities.

1) You have your boot sequence set incorrectly so its looking for the boot sector in the wrong place

2) there is a problem on the motherboard in the drive controllers that is not reading your disk drives properly

3) You are not using a disk formatted as a system disk as the boot drive.