I'm using windows vista.My wireless function had lost... My device used to work, but now it doesn't.. i had try to resolve it,but the system said that (This computer does not have a wireless adapter installed and configured. how does i resolve it ? hope that i had an answer shortly.Thanks

Are you using a laptop? If so, is it possible that the wireless switch on the case has been inadvertently turned off?

yes, I m using a laptop. I have turn-on the switch, but only have the bluetooth icon appear and thh wan icon was lost...so that i m using a lan to connect to the internet now...

yes, I m using a laptop. I have turn-on the switch, but only have the bluetooth icon appear and thh wan icon was lost...so that i m using a lan to connect to the internet now.. Strictly speaking you mean WLAN not WAN which is something different (Wide area network). Never mind, is the wireless adapter appearing in Device Manager?

Hi, If the wireless adapter appears in Device manager, go to the wireless adapter vendor's download center and install the latest wireless adapter driver. If not list, go to the laptop manufacture's download website to check if any BIOS update available. Or contact their support for more accurate information. System restore can be under consideration at this point too. Regards,Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.