I have a EVGA Geforce GTX 660 (02G-P4-2660-KR) and a Fatal1ty Z170 Professional Gaming i7. When I go into BIOS the resolution is not correct and it doesn't fill the screen. I have tried updating the driver but that didn't work. What else can I do to try to fix this? 

Welcome to the Forum iboyperson
It sounds more like you do not have your Monitor Setup Correctly.
 
 
Information about your Computer will allow members to help you.
This info will really help other Forum Members to help you.
 
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Hello iboyperson and welcome to the Forums.
 
The issue you are having is not driver related but is typically related to the monitor. This can usually be resolved by changing on screen display settings to calibrate the monitor or using a different input cable such as DVI. Are you able to test this way?

I am not able to test other cables and I don't see how color calibration would help.

I have two modes on my Monitor one expands the viewing window, had you posted the info above I would have looked this up for you.

Most monitors have settings beyond just color calibration. If you have an auto-adjust or aspect settings you may be able to mitigate the issue to some degree. Let me know what the model number of your monitor is so I can look into this for you.
 

A simple motherboard bios update may resolve the issue. Is your motherboard bios current?