0 Sign in to vote I have been using the Windows 10 preview for about 2 months now and everything is running fine except for the network. First I installed the preview on my laptop as a dual boot, with Windows 7 Home on the C: drive and Windows 10 Preview on the D: drive. If I am using Windows 7 my Wi-Fi works just fine but if I am using Windows 10 Preview, the Wi-Fi light will not come on and there is no internet connection. I can plug the laptop directly into the router and I have an internet connection. I can use a Wi-Fi dongle on the laptop and the internet connection in fine. I tried to find new drivers for the laptop network card but as far as I could tell, there were none available. Second, I installed the Windows 10 Preview on my desktop as a dual boot. I have an onboard Ethernet card but I also have a Killer Xeno Pro High Speed Network Card. If I plug the network cable into the onboard card I have internet access but if I plug it into the Killer Xeno Network card I have no internet access. I can also use the Wi-Fi dongle with the desktop. I paid extra when I had this computer built to have the Killer Xeno network card and I want to use it. As with the laptop, when I boot into Windows 7, the Killer Xeno card works fine. I am the resident geek for my friends and family and I have about 8 to 10 people that I have told to hold off on upgrading to Windows 10 because of these network problems. If they upgrade and have the same problems I have I can't just tell them that they're going to have to go buy a Wi-Fi dongle in order to use their computer. I would really appreciate any help that you could give me with this. I have been using Windows operating systems since 3.1 and I have never had a problem with getting the network cards to work.