I was facing some issue where wifi is losing internet access within few minutes after connecting. So I did a driver update with driver update software and it update the atheros wifi driver. Still I was facing same issues. So, I downloaded wifi driver from sony website and installed it. After that when I switch on wifi, I cannot find any networks. Also vaio smart network won't let me switch on the wifi but I can switch on bluetooth. So I have found some more related wifi drivers from other sites and installed them after uninstalling existing ones. I have also uninstalled smart network program in between and reinstalled to see if it is causing the problem.
I have tried system restore but computer is unable to do that. I have tried installing the driver provided by sony website but still same issue. Model : VPCEB36FG. How can I make my laptop wifi work? Please help me. I am not interested to reinstall my OS. Btw, does OS installers have wifi driver or should we install it after OS installation?