What version of Windows 7 OS do you have on your Acer computer? is it 64 Bit? The only drivers available for this computer are Windows 7 64Bit not 32bit (x86)
Go to Start/Search and type devmgmt.msc
Right click the devmgmt
icon in the search results and Run As Administrator
. In the Elevated Device Manager
art there any devices with yellow flags? These devices need to have drivers installed. The last 2 drivers in the Acer Driver download page
for your model are the WiFi drivers for this computer.