Welcome to Justanswer.com, my name is ***** ***** I will do my best to assist you.
To start with, I need to ask you some questions to determine the scope of the issue you are encountering.
Will your computer boot into windows normally?
The dvd you are trying to use, what is it supposed to be for , or supposed to do?
What version of windows are you using, Windows Vista, Windows 7, 8, or Windows 10?
Thank you in advance for your response.
Dustin S.Senior Technician and Network Switching Systems Operator / Maintainer.