Sierra installed successfully, WiFi doesn't show up. Need help setting WiFi up!

I'm very new to this, so please bare with me!

Installed Sierra successfully last night. Very happy! But, the WiFi doesn't work.

Specs:

• Desktop PC
• Processor: Intel Core i7-4790K CPU @ 4.00 GHz
• Ram: 16gb
• System: 64-bit, x64-based processor
• Video Card: NVIDIA GeForce GTX660
• SSD: Samsung 850 EVO 250GB (installed Sierra on this)
• Motherboard: ASUSTeK COMPUTER INC. MAXIMUS VII HERO (SOCKET 1150)

I'd like to get WiFi working on it (duh!) as this will be my daily...

Sierra installed successfully, WiFi doesn't show up. Need help setting WiFi up!