This could be an easy fix. Just go to Acer.com and click on support, then you have two choices, you can look up the laptop model number or serial number, or click on detect automatically icon and it will find it for you, then in support after finding the model click on driver and updates icon and youll see many drivers, go to the wifi driver download button or arrow, and it will start the download driver file and click on run botton and not the save button and it will start the install for your wifi.and instal from he wifi driver download . Good Luck…
To find what driver number for your wifi adapter #, is , on windows desk top click on Menu on Windows administration Icon and click on System information Icon, and click on system componetes or hardware and it should tel its driver number or adptor wifi model and the youl know the right driver to download bevausenther are several different driver but know mnufature and model and then tou download the correct one….