A friend of mine who has a computer with no internet connection thinks it is infected with virus. So can Avast be installed with no problem in an infected computer? I hope the viruses that are in that computer don't block the full installation of Avast.
I have no idea of what virus might be in that computer. The computer normally freezes while using it and then doesn't respond anymore. And so he has to reset or turn it off and then turn it on again in order to continue using the computer.
What type of virus might be?