Hi. Let's try running a System Restore...
Now, we want to run a System Restoration to the day before McAfee was installed. This should clean out all McAfee files.
Start in
Safe Mode by repeatedly pressing the
F8 key
as soon as you turn on the computer. You can perform the
System Restoration there by selecting
Safe Mode (you have a choice between Safe Mode, Safe Mode with Networking, and Safe Mode with Command Prompt), and then pressing enter on the operating system you are using. The system will load a bunch of drivers and such (may seem scary at first) and then you will see a normal looking login screen. Click on the
Administrator user name. That account will now start. You will be asked if you want to run
System Restore, or continue in Safe Mode. I would say to
run a restore first.
Now, you will see a window appear that give you two options...
(1) Restore my Computer to an earlier time (2) Create a restore point.Make sure that
"Restore my computer to an earlier time" has a bullet point next to it, and click on
Next. You will now be presented with a calendar. Click on the day before McAfee was installed, and click on a time if necessary. Click on
Next.
You will now see a confirmation screen. Make sure that the date and time (outlined in red) are correct, and click on
Finish. The computer will now restart. Before turning off, you will see a progress meter. This shows how far along the restore is. It may be a little slow, so
be patient. The system will now restart.
See if you can login and use the internet. This is the most common and simple way of fixing things.
Good luck!