Windows Installation Problem

I have an iMac with El Capital OS. I tried to install Windows 7 using Bootcamp. I created a mirror from a Windows installation disc and put it in an 8GB flash drive. I then used Bootcamp to created a separate partition (equal sizes) upon rebood, Windows installed from the flash.

However, there is no system tray on the Windows side and it is unable to connect to the Internet, although the Mac side connects with no problem. Also, I note that in Mac Preferences Start Up Disc, that the Bootcamp partition has been renamed Windows.

I really need Internet connectivity on the Windows side, but nothing I do in Control Panels opens a connection.

I'm pretty sure I'm doing something wrong on installation, but darned if I know what.

Any suggestions?