For the IBM, try going into the BIOS during startup to check the boot device order.
Usually as the computer is starting up, it will say something like "Press F2 to enter setup". (Depending on who made the BIOS, it could be DEL, F2, F8, F9, etc.) If you don't see that screen (some systems hide it), then try each of these. Enter the setup, and look for the boot device order somewhere. It will have things like CDRom, HDD01, Floppy, FDD, and the like in the list (but probably not all those things).
Make sure that CDRom is first, and HDD is second. That way if you want to boot from a CD, it will work properly without changing any of the settings. If your floppy drive is ahead of your HDD in the order, and there is a floppy disk in the drive (that is not a system disk), it will not boot, and give you this error.
If this doesn't fix it, then it means that your drive doesn't have system files on it, and you'll have to reformat/reinstall an OS. Generally you can boot from any OS CDRom, and it will start the installation process. A better idea would be to use a friend's computer with the same OS on it to create a System Restore Disk (or whatever it's called). Go into Control Panel - Add/Remove Programs, and look for the System Disk tab at the top.
Boot from this floppy (you'll have to make sure that you've got the floppy disk drive set up as a boot device BEFORE your HDD). Use FDisk to delete the primary DOS partition, then create a new one. REBOOT your computer, then type format c: /s
This should give you a clean Hard Disk with the very basic DOS system files on it. From here, you can use any OS disk to install a new operating system on your computer. It will wipe out all information on your disk drive, and give you a clean start. Be sure your OS install disk works before you do this, or you'll be stuck with a laptop that only runs DOS...
I do this a lot for friends who have messed up their computers beyond repair. It saves a lot of time and frustration to simply wipe the disk and start again. Just make sure that you've got any files you need backed up before you do this.
Good luck, and be sure to post any follow-up questions you may have! |