At On-Site Computer Guy® we realize that you don’t have the time to troubleshoot your business or home computer. Spending hours on hold waiting for a technician is frustrating.  This is where On-Site Computer Guy® shines.  


We come to you at your business or home to troubleshoot and fix your problems where they occur...On-Site.

We handle server setup and maintenace, networking, data recovery, desktop and laptop repairs.  We can provide Antivirus, Anti-Malware and Cloud backup solutions. Looking for new or refurbished equipment? We can find the hardware to fit your needs. Whether it is in your business or home, our certified technicians get the job done right.  We pride ourselves on affordable, fast, and convenient computer service.

On-Site Computer Guy®

Where No Geek Has Gone Before!®


Veteran Owned Business



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Lenovo Channel Partner


 Serving: Aurora, Sugar Grove, Yorkville, Elburn, Hinckley, Big Rock, Plano, Sandwich, Somonauk, Dekalb, Sycamore  and the Chicagoland area.

Located at:

135 S. Main St

Sandwich Il.  60548

Store Hours

Monday and Friday 9am - 5pm

Wednesday 9am - 12pm

Tuesday, Thursday and Saturday are By appointment








Where No Geek Has Gone Before!® is a registered trademark of On-Site Computer Guy®.  Intel and Lenovo ThinkPad & ThinkCentre are trademarks of the respective companies.