I have a Dell Dimension 5100 computer that has recently been Killed in action. The Hard drive is dead. I went ahead and replaced it with a NEW one. Only now whenever I try to install my WINDOWS 7 install disk it does not work. I have already GONE into BIOS and selected ''Boot Sequence'' then made sure that the Onboard or USB CD-Rom Device boots first from the CD. I keep getting the ''Floppy diskette failure'' message. Oh and yes, I DO have the Windows 7 Home Premium Software, I just purchased it from Amazon.com. I need help!!!! Does your computer have a floppy drive?
Is it listed in BIOS?
When you make BIOS boot order changes, do you press F10 on exit to SAVE changes?Well, when I go into BIOS it lists the following:

1 Onboard or USB CD-ROM Drive
2 Onboard or USB Floppy Drive (not present)
3 Onboard or SATA Hard Drive
4 Onboard or IDE Hard Drive
5 USB Device

And whenever I hit the Esc button it asks me whether or not I want to make:
More Changes, Save or Discard

Thanks for the help, I may have a faulty DVD Rom or CD-Rom drive I'm not sure.
Possible.
Move floppy drive to very last position and disable/remove it, if your BIOS allows it.
Press F10 to save changes.

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And whenever I hit the Esc button it asks me whether or not I want to make:
More Changes, Save or Discard