[NAME]  Clock Speed of Core Count is not the issue. Your Processor Generation (6th) is not officially supported. Yes there are ways you can Bypass the check while installation but in Future It would stop working completely. So don't even try it .     Here is a complete list of supported Intel Processors [URL]    
Plz, My Dell Inspiron 15 - 7000 series and I have GeForce GTX 960M and Intel(R) core (TM) I7-6700HQ CPU @ 2.60 Hz and 16 GB OF RAM, can my PC run windows 11?
Windows 11