100 Percent Disk Usage + 50 Percent CPU and Memory Usage

My computer HP Envy is really slow.  Disk usage is 100 percent and CPU and Memory usage is high often.

 

I am running NIS 360.  Should Norton monitor this usage and offer solutions?  It has a performance monitoring function and high usage is certainly a performance issue.

 

I have tried the Super fech and other possible issues.

 

Does anyone PLEASE have a solution?

 

THANKS!!!