I also had the problem "DriverMax has detected a serious windows folder problem and cannot work correctly." Restore of a system backup helped, but the problem returned.
After a lot of stress I found out what was the cause.
I did have several not-working shortcuts in Windows Explorer, such as Application Data, Cookies, Local Settings, Menu Start, NetHood, Networkprintersurrounding, Sendto and Templates. Clicking them got the error message that the location was not accessible and access was denied. So these shortcuts were useless and unnecessary and I removed them.
Happily, the removed shortcuts were still in my trash when I thought this might be the problem. I moved them back to their original location and DriverMax worked again.