Community & retail
Recognized local names
Our client community includes Crime Stoppers Niagara, Merrittville Speedway, and two local Shoppers Drug Mart franchise owners.
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JTG Systems
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JTG Systems
Professional installation and upgrade services for all major operating systems.
We are the highest-rated computer company in Niagara.
Expert operating system installation in the Niagara region. Windows, macOS, Linux, and Android solutions by seasoned technicians with 20+ years experience.
Text for a quick reply. Are you looking for Windows or Mac OS Installation? You found it. Visit us at 23 Sharon Ave in Welland. Text or call (905) 892-4555 and our team will confirm the next step right away.
We support every major platform. Whether you need a fresh start, an upgrade, or a complex dual-boot system, we have the expertise to get it done right.
Complete installation and optimization for all Windows versions.
Includes:
Expert macOS installation for MacBooks, iMacs, and Mac Minis.
Includes:
Secure and lightweight Linux distributions for any hardware.
Includes:
Stock and custom ROM installations for Android devices.
Includes:
We review your current system, goals, and hardware to choose the best OS and configuration for your needs.
Critical files are backed up and verified so your documents, photos, and apps stay safe during the install.
We perform a clean OS installation, apply updates, and configure drivers and security settings.
Post-install checks confirm performance, peripherals, and applications are all running flawlessly.
Trusted by Niagara residents and businesses.
Fast turnaround on most diagnostics and repairs.
Workmanship coverage on qualifying services.
Deep, multi‑vendor expertise across PC, Mac, and mobile.
100% free professional assessment.
Best Computer Repair — local Readers’ Choice.
Recognized in St. Catharines area.
Listed in 2019 and 2024.
Built on a foundation of integrity, expertise, and community trust.
Proudly serving the entire Niagara Region since 2005.
Consistently rated 4.9/5 on Google by happy customers.
Disciplined, security-minded service praised by individual police-service members.
The only computer shop partnered with Crime Stoppers Niagara.
Trusted across Niagara
People bring us the technology their work, finances, and daily lives depend on. That trust has grown through careful service, strong security practices, and word-of-mouth recommendations.
Community & retail
Our client community includes Crime Stoppers Niagara, Merrittville Speedway, and two local Shoppers Drug Mart franchise owners.
Individual police-service members
We have serviced more than 10 individual NRPS members, who speak highly of our work. Police services do not directly endorse private businesses.
Financial & legal professionals
We support the tax and accounting systems used by Jboey CPA, along with computers used by financial advisors, real-estate lawyers, and other professionals who handle sensitive information.
Cyber-fraud recovery
Local banks regularly refer cyber-fraud victims to us. We secure affected laptops and phones so clients can meet their bank’s requirements to reactivate their accounts.
Automotive businesses
Joe’s Garage in Port Colborne and Burkholder in Welland are among the local automotive businesses that rely on JTG Systems.
Owner-led local services
ALR Private Car Services (Greg), Integrity Cleaning Services Inc. (Rachel), and many more valued local clients choose JTG Systems.
Ask around Niagara—there is a good chance someone you trust already recommends JTG Systems. Some clients even drive from Grimsby because they value the service they receive here.
Discover our comprehensive range of technical services designed to keep your devices running smoothly
Don't let outdated operating systems hold you back. Contact JTG Systems today for professional OS installation and upgrade services in Niagara.