Hi,
Thank you for posting your question in the Microsoft Community Forums.
Based on the information, you are unable to run McAfee AntiVirus Plus due to a blank white screen.
It would be helpful if you could reply to the questions to assist you better.
1. Do you receive any error codes or messages?
2. Have you made any recent software or hardware changes on the system?
Let’s refer to the Mcafee support article and check if it helps.
SecurityCenter fails to open, displays a blank white screen, or displays
a Java error
If the issue persists, you need to get in touch with
Mcafee support for further assistance.
Hope the information helps.
Let us know if you need further assistance with Windows related issues. We will be happy to help.