From the sound of it, it appears the boot sector in your system has been damaged, or the boot loader files have been removed. You are correct for checking the removable drivers first, as if you leave a floppy disk in the system that has been formatted by NT/2K, you will get this error if you try to boot it by mistake. Repairing a problem like this isn't too difficult -- boot the CD and run the Repair option, and the boot sector files should be fixed automatically.
Dig Deeper on Windows Operating System Management
Related Q&A from Serdar Yegulalp
This week, our expert answers the question of how to get DVD data off a disc, even if the user's PC doesn't have an optical drive.continue reading
This week, our expert answers a question on how to connect a phone or tablet to a USB drive with a micro-USB connector.continue reading
Open source and free suites such as LibreOffice and OpenOffice could save organizations money, but not effort in comparison with Microsoft Office.continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.