So I have a HP Stream 14 cb100. A few days ago I went to turn it on and it said that I could not use my PIN because of recent security changes. I do not recall doing a system update. I ended up having to do a complete reset without saving my files because the computer would not recognize my password even though I had just changed it and knew it was correct. When I got back into the system the wifi network adaptor driver was gone. I do not have a manual wifi button and under Settings and Networks and Connections there is no wifi option. I tried to run the troubleshooter which said I did not have a driver installed. I tried to download the appropriate driver from HPs website by using my phone to tether to but it did not work. When I go into Device Manager the driver simply isn't there even when I click show hidden drivers. There are however, a bunch of miniports which are all caught up to date. I have tried to run a network reset and to reset the IP to no avail. I ran a BIOS update and a SFC scan with no results. Then I went into the registry to the network folder and there is nothing in the folder and the network connection folder says there is an error and it cannot open. Is there anything I can do?