Computer Repair, Training, Virus Removal, and Data Recovery Services
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Computer Repair, Consulting, Networking, Data Recovery, Virus Removal and More

(847) 701-5023


Your On-Site Computer and Technology Repair, Consulting, and Training Service

Kozlov Tech Services LLC is a professional, licensed, and fully insured computer repair, training and consulting company that can service all your technological needs. We’re happy to fix any computer problems, both big and small. Our professional computer technicians and trainers will ensure that you and your computer are up and running in no-time!


Computer Repairs

Kozlov Tech Services LLC can repair most all makes and brands of computers and technology. Whether your laptop needs more RAM or your computer is in need of a new hard drive, our technicians can service all your computer repair and upgrade needs. Rest assured, it will be done right as we stand behind our computer repair work.

Data & File Recovery

Nothing is more stressful than losing your computer’s data. Let our technicians retrieve data from a failing hard drive on your computer. Our industry leading software gives us the ability to extract data and files from even the most damaged computers. If you feel your computer’s hard drive is failing, it is best to stop using it and contact us.

Virus Removal

Let us remove those unwanted viruses and spyware to help ensure your computer is protected against future virus attacks. Your personal security is of our utmost concern. Contact us if you think your computer is compromised with a virus or spyware.

Computer Speed Up

Have a slow computer? Let us take a look it, so we can speed up your slow computer. This preventative service makes your life easier and increases the speed and longevity of your computer. Your whole system will be analyzed. Your computer’s software and hardware will be evaluated, and options for repair and/or upgrades will be provided if needed.

Personal Training

Learn how to use your new computer, laptop, MAC, tablet, or smartphone with our one-on-one training services. We will patiently teach you how to use your device and answer any questions you may have. We travel to our client’s location upon request to make your computer training as seamless and easy as possible.


Have a secure, correctly configured network for your home or business. Our technicians can help you develop IT strategies to maximize your network up-time and productivity. Whether you need a completely new network installed, or are just looking to upgrade or scale your existing network, we can service your home or business networking needs.

New Computer Set-Up

Start off on the right foot with our new computer setup. Your computer will be optimized to run as it should. Our computer technicians will remove any “bloatware” programs that slow down your computer, set up anti-virus software, and ensure that there are proper data recovery tools in place.

Remote Support

Your computer needs to be fixed, and you needed it fixed 10-minutes ago! Not a problem. We offer remote support for you and your computer. We will securely log in, diagnose, and fix your computer’s problem as fast as possible to get your computer up and running.

Data Backup

Everyone loses data at some point in their lives. Your computer’s hard drive could fail, ransomware could hold your files hostage, or a software bug could delete your important files. Backups don’t have to be hard or confusing, but which one is right for you? We’ll help you sort through options and get your backed up securely.

Home Theater Installation

We’re your one stop shop for Home Theater Sound, Home Theater Video and installation services. We’ll be glad to take care of the set-up, installation and testing, all while leaving your home in great shape. Home theater systems can be complex, but we take care of the Home Theater Video and Home Theater Sound installation for you, from start to finish.

Business Solutions

For every challenge, there’s an IT solution. Get help resolving your technology problems with intelligent IT solutions and services customized for your business from Kozlov Tech Services LLC. We work with many home and small businesses to meet their technology needs.


Custom Solutions

From unlimited, ongoing IT service to need-based assistance and one-off project support, Kozlov Tech Services tailors a solution to suit your needs. Not seeing what you’re looking for on our website? Contact us! We work with many unique needs and issues with our clients and will always put your needs above ours.

What Our Clients are Saying…

Mr. Kozlov is not only incredibly professional but also multi talented in being able to work with… I have yet to throw him for a loop! His service pricing is very reasonable too. I am happy to recommend Mr. Kozlov to you.
Sarah D.

Mark is knowledgeable, thorough, and friendly. He accomplished the work in a timely and professional manner. We highly recommend his services.
David T.

Mark is always willing to go the extra mile to find exactly what I need! He provides excellent customer service for all my technology needs.
Hannah S.

Mark Kozlov

Mark Kozlov


Mark studied Information Systems and Technology at Western Governors University. He has passion for bridging the divide between technology and usability for his clients. He is committed to providing clients with personal service and the most up-to-date technological solutions. When working with Kozlov Tech Services LLC, Mark will ensure the solution for your problem is tailored just for you and your situation.

Contact Kozlov Tech Services LLC


Kozlov Tech Services LLC

Computer Repair, Training & Consulting

Buffalo Grove, IL

[email protected]

(847) 701 – 5023