Grant-Tech, your one-stop shop for all your computer and network support needs. Supporting small and medium-sized businesses who have limited or no IT staff available, is our specialty. Your business is not to worry about your computer systems, your business is to focus on marketing your product or services to your customers.  As your Partner, Grant-Tech delivers on-demand, on-site computer and network services that are convenient and reliable. Our commitment to quality  customer service has made us the most respected on-site computer repair and support provider in Illinois.

Repair & Troubleshooting

We come directly to your office to provide on-the-spot help and support for your computer infrastructure. We offer same-day, next-day, after-hours, and weekend service, 24 hours a day, 7 days a week.

Network Services

Your computer infrastructure is vital to your business. When problems pop-up, you need fast on-site services. In addition to traditional wired networks, our technicians are experts at installing, configuring, and securing wireless networks. Whatever your computing needs, Grant-Tech can provide the solutions.

Broadband Installation

If your business needs assistance in connecting high-speed internet access to all of the computers on your network, Grant-Tech can handle it all.  We have partnerships with several service providers and will work with you to select the best choice for your business requirements and needs.

Customized Service Plans

Lower your costs for the latest technology and minimize downtime with our fast, on-site services. Our support agreements are completely customizable to meet the needs of your organization.

Virus/Spyware Detection and Removal

No matter what kind of computer you have, you need the latest antivirus software. Not only do antivirus programs protect your computer from damage, but they also prevent you from accidentally passing viruses to co-workers when you send emails or share files. If you’re unsure about which virus software to install or how to configure it, just ask our experts.  Several clients are currently using free anti-virus and spyware software. So why spend the money on software when we can help you choose the best free solution for your work environment?

Voice Over Internet Protocol (VoIP) Telephone Solutions

Looking for a cloud virtual PBX solution with a ton of functionality not found in other solutions, then consider looking at RingCentral, the #1 cloud based VoIP phone solution on the market today.

Firewalls and Internet Security

Your data and software solutions are the back bone of your business operation.  You need a firewall and internet security solution that will keep people out of your companies network. Grant-Tech has the necessary knowledge to recommend a solution based on your business needs.

One-On-One Training

Get results from personalized training sessions. If it’s training you need – from beginner to advanced – our trainers offer easy-to-understand instruction for a flat hourly rate. Topics include: Windows operating systems, MS Office products, wireless applications, web and e-commerce applications, etc. Customized training is also available so gives us a call for a free consultation.

Windows Server 2003 Countdown

Microsoft no longer supports Windows Server 2003.


Were you able to upgrade or replace your servers before the July 14, 2015 deadline for Windows Server 2003? If not, give us a call at (773) 675-1423 because your systems and data are at risk.

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