You can look up what files or folders were removed easily.
Double-click the taskbar icon to open Security Center
Click History and Logs (Left)
Search in those sections
Also you can look in the Quarantine folders
Click Quarantined and Trusted Items in the list below.
Search those sections.
If the system malfunctions afterwards then perhaps it's time for a format and reinstall and to look into why these infections are being aquired as that shouldn't be happening. Antivirus can only do so much, a lot of it is up to you plus you could arm yourself with some extra tools.
See 3rd Party Tools here: https://community.mcafee.com/docs/DOC-2168
Also, if something has been detected in error that you know isn't an infection then you can submit it for analysis.
Procedures for that are outlined here: https://community.mcafee.com/thread/2016
If you feel the user interface needs improving then post an idea here: https://community.mcafee.com/community/home/ideas
There's always room for improvement and ideas are welcome.