- Laptop and desktop diagnostics
- Hard drive and SSD replacements
- RAM and performance upgrades
- Power supply & motherboard issues
- Virus and malware removal
- Operating system installs & tune-ups
When your computer slows down, crashes, or won’t turn on, Infinity Computers in St. Catharines provides expert computer repair you can count on.
Our St. Catharines computer repair technicians fix laptops, desktops, and gaming PCs quickly and affordably. From hardware replacements and upgrades to virus and malware removal, we’ll get your device running smoothly again with minimal downtime.

See all our other St. Catharines services on the St. Catharines hub page
Hundreds in St. Catharines trust Infinity Computers for reliable PC and laptop repairs with over 100+ five-star Google reviews.
EXCELLENT Based on 100 reviews Posted on Rachel2025-09-06Trustindex verifies that the original source of the review is Google. Great service fixing my son’s iPad and fire tablet!Posted on Alexandra2025-09-04Trustindex verifies that the original source of the review is Google. My PS5 kept overheating, did the recommended steps of cleaning out the fan and a factory reset but it didn't resolve the issue. Was only able to play for about 30 minutes before I had to shut down because it was too hot. Brought it in to Ryan and within a day he had it repaired. I have logged about 20 hours of play since without issue and honestly I think it is running better now than when I bought it.Posted on Anna2025-09-02Trustindex verifies that the original source of the review is Google. Great work and such a pleasant experience! Highly recommend coming to Infinity Computers!Posted on Tom2025-08-19Trustindex verifies that the original source of the review is Google. Dealing with Ryan was an absolute pleasure. He is diligent with his communications, knowledgeable on all matters IT, budget conscious, professional and polite. Trust me on this one, if you have a computer, tablet, phone issue then Ryan is the one you need to connect with. Thanks Ryan!!
Owner's reply
Thank you so much for the thoughtful review! It’s always my goal to provide clear communication, reliable solutions, and the best value possible. I truly appreciate your trust and support, and I’m always here if you ever need help again. - Ryan, Infinity ComputersPosted on Jordan2025-08-18Trustindex verifies that the original source of the review is Google. There's a reason Infinity Computers has so many great reviews! Ryan is super passionate about his business and it really shows. He offers the best prices around, and the support he provides is next level compared to any other place in town. I checked with a couple of other spots in St. Catharines, but nothing beats the service Ryan gives. I texted him late on a Sunday night and he got back to me right away. Seriously, you won't find better. Keep it up, Ryan – hope your business keeps growing! +++++
Owner's reply
Thanks Jordan, really appreciate the support. I was happy to help you out in a pinch, and I pride myself on giving the best customer service possible. Always here if you need anything! - Ryan, Infinity ComputersPosted on Nathan2025-08-15Trustindex verifies that the original source of the review is Google. Great job
Owner's reply
Thanks Nathan, I really appreciate the review! - Ryan, Infinity ComputersPosted on Dave2025-08-13Trustindex verifies that the original source of the review is Google. Ryan was awesome,very professional.Repaired my phone quickly,and it works better then when I first got the phone.I would highly recommend Ryan .thanks again Ryan.
Owner's reply
Thanks a lot, Dave! Glad I could get your phone back up and running even better than before. Appreciate the recommendation, and I’m here anytime you need a hand. – Ryan, Infinity ComputersPosted on Naomi2025-08-13Trustindex verifies that the original source of the review is Google. Fantastic service! Ryan is super knowledgeable and honest. I dropped my phone (pixel 7 pro) and cracked the screen. I inquired around for pricing initially but Ryan offered the best price for a new screen and install and offered a quick turnaround time. We had some issues trying to get the fingerprint scanner to work, but Ryan was absolutely relentless to ensure it was fixed properly and even ordered me a new screen again which ended up working. Very grateful to have found someone local to provide these services and who genuinely cares about his business and customers... not an easy thing to find these days! Don't think twice, Ryan (Infinity Computers) is your stop for all IT needs!
Owner's reply
Thanks so much, Naomi! I’m glad I could get your Pixel 7 Pro back in top shape and make sure everything was working perfectly. I really appreciate you trusting me with the repair and for the awesome feedback. – Ryan, Infinity ComputersPosted on Shaq2025-08-12Trustindex verifies that the original source of the review is Google. Absolutely amazing individual ! Such a kind knowledgeable computer tech really knows his stuff. I had my first pc installed a very expensive graphics card for me the 5080OC and psu and he took such care and made it such a great experience . Even gave me a part I needed for free my only computer tech from now on I cannot recommend him enough . There’s no where else I will go from now on if your wondering if you should go with him the answer is a resounding yes . Absolutely awesome tech and person thank you so much I will only be bring and recommending my future computer pc needs with you thank you . Awesome tech 5 star quality attention to detail .
Owner's reply
Thanks, Shaq! It was awesome talking with you and I’m glad I could make the upgrade smooth and get you set up with the new GPU and PSU. Really appreciate the kind words and I’m always here for any of your future PC needs. – Ryan, Infinity ComputersPosted on Lou2025-08-11Trustindex verifies that the original source of the review is Google. Great communication, excellent turn around time. Saved my daughter’s phone! Better priced than competitors. Very friendly and knowledgeable. Highly recommend.
Owner's reply
Thanks, Lou! I’m glad I could help get your daughter’s phone back up and running. I appreciate the kind words and the recommendation! – Ryan, Infinity Computers
Yes, we service both custom-built and prebuilt gaming PCs. Whether it’s hardware, software, or performance issues, our technicians can get your system running at peak performance.
In many cases, yes. We use professional tools to recover data from hard drives, SSDs, and other storage devices. If your computer won’t turn on, we’ll still do our best to save your photos, documents, and files.
Most repairs are completed the same day as drop-off or within 24–48 hours. If a repair takes longer, it’s usually because we need to order parts. We’re always transparent and will keep you updated every step of the way.
Yes, all repairs include a warranty for peace of mind, plus lifetime support so you always have expert help when you need it.
We handle a wide range of services including hardware repairs, SSD and hard drive replacements, RAM upgrades, virus and malware removal, operating system installs, and performance tune-ups. We also fix broken screens and keyboards, repair laptop frames and housings, and replace damaged hinges. If you don’t see a service listed, just ask. We can repair all sorts of devices.
No, we also serve customers across the Niagara Region. Our technicians provide computer repairs in St. Catharines, Niagara Falls, Welland, and surrounding areas.
Yes. Depending on your location in St. Catharines or Niagara, we may offer pickup options for computer repair. Remote support is also available for certain software-related issues. We can also provide on-site service for an additional fee if you prefer repairs done at your home or business.
Yes. We offer free quotes on all computer repairs in St. Catharines. Diagnostics are $50, but the fee is waived if you choose to go ahead with the repair.
Infinity Computers is a trusted name in Niagara with 100+ positive reviews. We provide affordable phone repair in St. Catharines with fast turnaround, expert technicians, warranty coverage, and lifetime support — giving you peace of mind with every repair.
Book your St. Catharines computer repair today. Fast, affordable fixes for laptops, desktops, and gaming PCs backed by warranty and lifetime support.