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JTG Systems
Windows or Mac OS Installation
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.
Windows 11 & 10macOS SonomaUbuntu & Linux
Walk-ins Welcome. Are you looking for Windows or Mac OS Installation? You found it! Let's get to work on your device right away—bring it in and our experienced team will start the repair while you wait.
Our Operating System Services
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.
Windows Installation
Complete installation and optimization for all Windows versions.
Includes:
- Windows 11 Pro/Home installation
- Windows 10/8.1/7 support
- Legacy Windows support (Vista, XP)
- Custom configurations & tweaks
- Business Server setups
- Dual-boot configurations
- Driver updates included
macOS and iOS Setup
Expert macOS installation for MacBooks, iMacs, and Mac Minis.
Includes:
- Latest macOS Sonoma install
- OSX Upgrade paths
- Clean install with migration
- iOS/iPadOS updates
- Time Machine configuration
- Apple ecosystem integration
- Performance tuning
Linux Installation
Secure and lightweight Linux distributions for any hardware.
Includes:
- Ubuntu, Fedora, Debian
- Enterprise Linux (RHEL, SUSE)
- Dual-boot with Windows/Mac
- Custom kernel configs
- Server distributions
- Desktop customization
- Security hardening
Android Firmware
Stock and custom ROM installations for Android devices.
Includes:
- Stock Android OS installs
- Custom ROM setup
- Security updates & patches
- Manufacturer updates
- Data backup & restore
- Performance boosting
- App migration help
Our Professional OS Installation Process
1
Assessment
We review your current system, goals, and hardware to choose the best OS and configuration for your needs.
2
Backup
Critical files are backed up and verified so your documents, photos, and apps stay safe during the install.
3
Install
We perform a clean OS installation, apply updates, and configure drivers and security settings.
4
Testing
Post-install checks confirm performance, peripherals, and applications are all running flawlessly.
Why Choose JTG Systems for OS Installation & Upgrades
1,100+ Five‑Star Reviews
Trusted by Niagara residents and businesses.
Same‑Day Service
Fast turnaround on most diagnostics and repairs.
90‑Day Warranty
Workmanship coverage on qualifying services.
20+ Years Experienced Technicians
Deep, multi‑vendor expertise across PC, Mac, and mobile.
Upfront Pricing
Clear quotes with no surprise fees.
Readers’ Choice Award Winner
Best Computer Repair — local Readers’ Choice.
Diamond Award Winner
Recognized in St. Catharines area.
Top 3 Rated — ThreeBestRated.ca
Listed in 2019 and 2024.
Niagara TrustsJTG Systems
Built on a foundation of integrity, expertise, and community trust.
20+
Years
Experience
Proudly serving the entire Niagara Region since 2005.
1,100+
5-Star Reviews
Consistently rated 4.9/5 on Google by happy customers.
Veteran
Led
Former Military
Disciplined, secure, and trusted by law enforcement.
Partner
Crime Stoppers
The only computer shop partnered with Crime Stoppers Niagara.
Related Services
Discover our comprehensive range of technical services designed to keep your devices running smoothly