My Friend had this problem on his HP when he upgraded to windows 10 i fixed it on TeamViewer
What you can do is make Crossfire in windowed mode but to reach the settings button it's more complicated and unfortunately i don't remember the exact steps i had done.. While In Channel Press ctrl + alt + delete / Task Manager at this point the task bar should be visible if it is then proceed > Right click on the task bar / Show the Desktop If it works proceed > Right Click on it (supposing you have Intel HD Graphics Driver installed) go into Graphics properties / Display / Re adjust the resolution to it's Max and then go back to CF and change it to windowed mode. If this tutorial didn't work i could help you on Team Viewer though you probably don't trust me and i'm not sure if i'm allowed to offer that.