I have had a Lenovo A10 Desktop Computer for a little over 2 years with no problems until Nov. 8th. At around 4 PM I suddenly couldn't get online only to discover that Wifi is now missing from my network adapter settings, network status (it is still listed under network properties but status says not present, disconnected) and also the Network and Sharing center. Only ethernet is listed there. Wifi is also missing on the device manager network adapter list. The icon on the taskbar to connect to the internet isn't the usual icon but box-shaped with a Red X and it doesn't show my wireless connection or any of the other connections on my street like it should plus the Airplane Mode on the notifications list is missing too. My computer originally came with Windows 8.1 and I upgraded to Windows 10 several months ago and had no problems at all. I also downloaded the Anniversary update when it was available. I've tried a few things I read online but it hasn't fixed the problem. I also observed another thing yesterday that is unusual. When I start the desktop, it used to start up right away but now it takes a full minute to boot up (black screen) and I hear a "whoooshing" sound until it boots up. It takes the same amount of time to restart the computer but no such sound when I do restart it.. My 2 year warranty is up. Any suggestions on how to fix my problems?