New Hd, no wifi icon, can't finish updates.
I installed a new Hard Drive in my iMac 21.5 desktop, then used the original install DVDs successfully. There is no wifi icon to hook it up and in system preferences and clicking on network I can find no way to set up wifi. Also when I try to do updates, it Downloads them but won't restart to install them. When I look up system updates like Yosemite they have black lines through them and I can't even down load them.