AVG anti virus app won't open

E, Quote "I tried disabling the McAfee product on my computer"… Download & run the McAfee total removal tool (http://us.mcafee.com/apps/supporttools/mcpr/mcpr.asp).
AVG Guru

I installed the free version of the AVG anti virus on my Windows 10 machine and it worked fine for a few days.  Now it won't open.  I tried to uninstall in order to reinstall, and it won't uninstall.  I tried disabling the McAfee product on my computer and there was no response, nor was there a 'disable' link or option found anywhere.  I also installed Turbo Tax yesterday and it worked fine, and now it won't open. Please help.

E, Quote "I tried disabling the McAfee product on my computer"… Download & run the McAfee total removal tool (http://us.mcafee.com/apps/supporttools/mcpr/mcpr.asp).
AVG Guru