Do you mean both anti-virus you r using? if yes you should keep one kaspersky is better one.
in network properties check wireless connection status and device manager\network adapter\wireless driver
Can you mention which M\C you have laptop or desktop with model? as per that you can check updated wireless driver on specific model.
And you can repair windows system with current OS. after first screen press continusly F8 some list will display,
in that choose repair your computer after that follow instructions.