Founded in 1991 by Kurt and Jeanne Johnson, Computer Maintenance Service (CMS) began as a modest break-fix operation focused on maintaining residential and commercial computers at a time when replacing expensive hardware wasn’t feasible. As technology rapidly advanced, CMS recognized the need for a proactive managed IT approach, evolving into a comprehensive provider offering cloud computing, cybersecurity, data backup, camera and phone systems, and equipment repair. With a dedicated local team, CMS specializes in supporting small and medium businesses—especially within manufacturing—delivering trusted, round-the-clock monitoring solutions that minimize downtime and enable clients to focus on strategic goals. Committed to transparency, reliability, and community engagement, CMS continues to serve the Chicago suburbs with personalized, flat-fee IT services tailored to client needs.