My suggestion would be this:
Download Ccleaner and run it. (Not reg cleaner just the reg cleaner)
CCleaner - Optimization and Cleaning - Free Download
For additional clean up:
open a cmd promp as admin;
type--> cleanmgr sageset:50
check all the boxes
then type --> cleanmgr sagerun:50
this is just an advanced version of disk cleanup
Finally, Download Malwarebytes.
Malwarebytes
Update it and run it.
From what Ive seen, it appears the majority of the problem revolves around Safari.
Unless I missed something.
Try using Internet Explorer 8, and see what results you get.
There are many opinions on what browser is best to use, and they are all correct for their needs.
I have found overall that IE8 is actually the best for my needs, and my personal favorite.
Alternativley, Firefox, Chrome, and Opera is another favorite amoung many.
The point here, is simply to see if another browser resolves the issue.