I don't know why you're being peddled MucAfee by your cable company, but we are the top authority on Win7 here (not your cable company) and we are trying to tell you it is the worst possible thing you can install on your PC.
It is so bad that like a virus it requires its own removal tool to fully uninstall it all, along with reboots. Did you run this when it was provided?
Simply removing the MucAfee infection is not enough, even with the removal tool. So when you said you are amenable to a reinstall I provided you with the steps to not only get a perfect
Clean Reinstall but to keep it that way for as long as you stick with the tools and methods given in the blue link.
This is based on helping with tens of thousands of Win7 installs since before it was even released. Our collective knowledge and love of Win7 has made this the top tech forums online and in history, with the highest reputation and awards that can be achieved in the tech field.
If you're not quite ready to reinstall then install
Microsoft Security Essentials and run a full scan, run a full
Malwarebytes scan, a full scan with
SUPERAntiSpyware.com - Downloads and
Flush your DNS.
Disable all add-ons in your browsers except Flash, disable all Startups except AV and sync in msconfig>Startup and >Services after Hiding All MS Services.
Here are more
Troubleshooting Steps for Windows 7 which will check over your system thoroughly and help you complete the others.