When I search Google for the term 'computer repair green bay wi' I see your site organically towards the top of page 2 so you are doing something right.
Google does sort of frown on super long title tags. Consider changing your title tag on your homepage.
Current title tag: 'Computer Repair Green Bay [Aztech Computer Solutions] Green Bay, Wisconsin'
Suggested title tag: 'Computer Repair Green Bay WI | Aztech Computer Solutions'
It looks like your phone number and address are listed in the header image of your site, so Google is unable to crawl that. It's pretty important that Google can crawl and see that information to know you are a genuine local business. In the footer of your home page where it says '© 2015 Aztech Computer Solutions' I would add your address and phone number. Google will be able to see that there.
I see you have a GMB page and it ranks in about the 7th position for that same keyword. You are only about 4 positions away from making it into the 3 pack. You have 2 reviews already. Keep building reviews from your customers. Google your competitors phone numbers and find all of the local citations they are listed on (whitepages.com, merchantcircle.com, yelp.com, etc) and sign your business up on those same sites. Make sure the information you add to the local citation sites matches the information exactly as it is on your GMB page. Good luck.