Bootcamp installer not working

I have a imac 2014 that I just installed Windows 10 on thru Boot Camp. I didn't get to install the extra support because it was constantly giving errors. After installing windows 10, I tried to find the boot camp icon in the taskbar, and it wasn't there. I also looked online to see if there were any ways to unhide it, but all of them failed. I also only received ethernet as a method to connect online (which I'm using now to make this post), but WiFi wasn't an option. How can I fix this issue? Thanks in advance