WINDOWS • LINUX • APPLE • SECURITY

Computer trouble? Bring it to someone local.

CDNJ Service helps home users and businesses solve computer problems without the jargon—from broken Windows PCs and Apple repairs to viruses, hacked accounts, data transfers, upgrades, and Linux conversions.

Start with the problem — not the jargon.

Tell us what is happening. We will help determine the right next step.

WINDOWS + LINUX

Repairs, upgrades and Linux conversions

MAC REPAIR

Mac desktops and laptops

SECURITY HELP

Virus, scam and hacking situations

PRIMARY REPAIR SERVICES

What can we help you fix?

The site is organized around the problems customers actually experience, with clear paths for Windows, Linux, Apple and security-related service.

Windows PC Repair

Diagnostics, slow computers, startup problems, hardware failures, upgrades, tune-ups and everyday Windows issues.

Linux & Zorin OS

Move an eligible computer from Windows to a clean, familiar Linux environment—especially when Windows 11 is not the right fit.

Mac Repair

Help with Mac desktops and laptops, including diagnostics, performance problems, hardware concerns and software issues.

Virus & Hacking Recovery

Malware removal, suspicious pop-ups, scam aftermath, hacked-account guidance and steps to secure the device again.

Data Transfer & Backup

Move files to a new computer, recover accessible data, organize backups and reduce the risk of losing important files.

Upgrades & Tune-Ups

Memory, storage and performance improvements can make sense when repairing or extending the life of a computer.

A PRACTICAL WINDOWS 11 ALTERNATIVE

Keep the computer. Change the operating system.

Some computers still work well but are not a good match for Windows 11. CDNJ can evaluate whether Zorin OS—a familiar, user-friendly Linux option—can give the machine a useful second life.

A conversion may be worth considering when:

Every computer and software need is different. CDNJ will review compatibility before recommending a conversion.

COMMON PROBLEMS

You do not need to know what is wrong.

Choose the situation that sounds closest to yours. We can diagnose the cause from there.

It Will Not Start

Black screen, boot loop, error message or no response at all.

It Is Painfully Slow

Long startup, freezing, constant spinning or programs that will not cooperate.

I Think I Was Hacked

Suspicious access, scam calls, fake alerts, unknown programs or changed passwords.

Windows 11 Is a Problem

Unsupported hardware, unwanted changes or a computer that still has useful life.

My Mac Needs Help

Performance, startup, storage, display, battery or other Apple computer concerns.

I Need My Files Moved

New computer setup, drive replacement, backups or transferring important photos and documents.

HOW SERVICE WORKS

A straightforward repair process

You will know what happens next, what the likely options are, and what decision needs to be made.

1. Bring in the device

Share the problem, when it started and anything you already tried.

2. Diagnose the cause

CDNJ checks the device and identifies realistic repair or replacement options.

3. Repair and explain

Approved work is completed, then the solution is explained in plain language.

READY WHEN YOU ARE

Get the device checked before the problem gets worse.

Describe what is happening or call the shop. CDNJ will help you decide the best next step.