The Wi-Fi connection on your wireless device may have problems for many reasons and in many cases not work, mostly these problems are the same user errors, verify that the problem is due to then know what the solution of it, read this post where you can see most of the reasons why the Wi-Fi might not work and how to solve each problem:
I had the same problem with my 3680. Vista was so slow I had to go back to XP. The 3680 handbook says that the wlan chip is Intel PRO/Wireless 3945ABG. I tried all the Intel 3945ABG drivers from Acer but no go. I did a hardware listing under Fedora(/sbin/lspci) and it said my chipset was Atheros AR242x. I got the 'Wireless Lan Driver Atheros 802abg Atheros ver.126.96.36.199' from the Atheros website and the wifi now works. When I tried to load Acer Empowering Technology which was there with Vista it said this programme only works with Intel chips?? Am I misunderstanding something here? To offer Vista on low power laptops is ridiculous. Next time I will request XP as the operating system.
Hey. I just used the instructions on the intel website to find out what mine was (I also have an Acer Aspire 3680). It's neither an Intel nor a..whatever that other one was. It says that it's a Yukon. A Marvell Yukon 88E8038. Unless I'm completely wrong about that.