How much does it cost to diagnose my computer? We charge a small diagnostic fee which is applied toward repairs. $49.99 diagnostic fee for Windows based laptops or desktop computers. $69.99 for Mac desktop or laptop computers. By Rodi|2017-08-11T15:56:08-05:00August 11th, 2017|0 Comments Share This Story, Choose Your Platform! FacebookXRedditLinkedInTumblrPinterestVkEmail About the Author: Rodi