I came on to Acer to reinstall driver, but when entering my S/n number or SNID it comes up model not recognised. LAC states 'Network Cable Unplugged, WNC2 states 'not connected'. I use wireless as does my mother on her Acer laptop. There are also Local Area Connection and Wireless Network Connection 2 listed under Network Connections both have red 'x' next to them. I had a look on google and tried the advice of going to my Network Connections and seleced Wireless Network Connection, right clicked on Properties and confirmed that IPV6 (TCP/IPv6) was enabled, so I guess I can rule out that as a problem. I have tried following the on screen instructions to fix this but it came up unsuccesfull and 'Further Details' state that there is a 'Problem with PNP Devices'. It states that this Teredo Tunneling Adapter has driver problems. As a result I had a quick look around my PC and found I have an '!' mark at the icon for Notebook. Recently Ive noticed very often there are crackling noises coming from some audio sources, they are mainly when looking online, not so much when using WMP. Ive never had problems with my Acer Aspire 7540 Notebook, its a windows 7 64bit. Hello registering for first time and posting too.

How to download teredo tunnler adaptor