wifi not working

Hey I’m a newbie.I have a Sony Vaio E Series SVE15116EN with an AMD Radeon HD7650M Graphic Card. I installed the 12.1 version. I couldn’t change the brightness and couldnt connect to Wifi.I didn’t have the time to deal with it so i had to uninstall it.Now i want to install it again. What should i do?

I followed the instructions in the sticky note…
02:00.0 Network controller [0280]: Atheros Communications Inc. AR9485 Wireless Network Adapter [168c:0032] (rev 01)
Subsystem: Foxconn International, Inc. Device [105b:e044]
Kernel driver in use: ath9k

0e:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller [10ec:8168] (rev 07)
Subsystem: Sony Corporation Device [104d:90ac]
Kernel driver in use: r8169
i cant open boot.msg…it says there’s no application that can open it…I searched online for apps that can open it but didn’t find anything…Please help