when you get to your desktop, click on start, run, and type msconfig. It should bring up the system configuration utility. You're going to choose the boot.ini tab, and click on check boot paths, it...

Not sure if this will work, but what you can try doing if you have the OS disk is:
1) put the OS disk in the cd drive
2) restart the computer, and immediatly start tapping the F12 key, until you...