You can install, will just have to disable it from starting at startup. This is best done not connected to the internet because it involves disabling one of your AV programs temporarily.
1. Download Second program
2. Close out of the program you currently have running
3. Install Avast (or whatever new one is)
4. Stop Avast from booting up with Windows
-Hold WinLogo button on keyboard and tap r
-type in "msconfig" without the quotes
-go over to the startup tab and disable from starting
5. Reboot and your old program should come up, and Avast (or whatever) will be installed but not running in the background.
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We do what we must because we can.
Guess who just got a red bar, finally!
"ur wrong again.. damn u can't do any thing wright"
---aGIRLunknown