Hi,
Let's do one problem at a time. You should not have more than 1 Anti Virus program installed and running in a PC. They will all be competing to protect your PC and slowing it down as a result. You say that you have both Norton and McAfee pop ups this suggests that they are both installed. You may also have Windows Defender running as well. If you do have this many A/V programs installed you need to uninstall at least two (if you have Defender enabled you can just disable it. You can turn Defender off by going to Control Panel > Windows Defender. You will have to decide which A/V program you want and then uninstall the other. Alternatively you can initially uninstall both Norton and McAfee and rely on Defender. Google how to uninstall Norton or McAfee if you don't know how to do it.