How to Back Up Your Computer
(Before It's Too Late)

Here's a conversation we have at least once a week at PC Medics of NJ:

"My computer won't turn on. Can you save my files?"

Sometimes we can. Sometimes we can't. And the ones we can't save are heartbreaking — twenty years of family photos, a small business's entire accounting records, a college student's thesis due in three days. All gone because there was no backup.

We're not saying this to scare you. We're saying it because backing up your computer is one of the easiest, most important things you can do — and almost nobody does it until it's too late. This guide will walk you through your options so you can set it up today and never worry about it again.

1 Why Backups Matter More Than You Think

People think of backups as insurance against a hard drive failure, and that's true. But hard drive failure is just one of the many ways you can lose everything:

• Ransomware encrypts all your files and demands payment. If you have a backup, you can wipe the computer and restore — problem solved.
• Accidental deletion — you or someone else deletes files you didn't mean to lose. It happens more often than you'd think.
• Theft or damage — your laptop gets stolen, dropped, or has coffee spilled on it. The hardware can be replaced. Your files can't.
• Software corruption — a bad Windows update, a failed upgrade, or a corrupted program can take your operating system down and your files with it.
• Natural disasters — a pipe bursts, a fire starts, a power surge fries your machine. It doesn't happen often, but when it does, the people with backups are the only ones who recover.

2 Option 1: External Hard Drive

The simplest and most affordable backup method. You buy an external hard drive, plug it into your computer via USB, and copy your important files to it.

• Cost: A 1TB external drive runs about $50-60. A 2TB drive is around $70-80. That's the price of a pizza dinner for your family — to protect everything on your computer.
• Pros: One-time cost, fast transfers, no internet needed, you physically control your data.
• Cons: You have to remember to plug it in and run backups. If it's sitting next to your computer and your house floods, you lose both.

For the best protection, keep the external drive in a different location when you're not actively backing up — at your office, at a family member's house, or in a fireproof safe.

3 Option 2: Cloud Backup

Cloud backup stores your files on remote servers over the internet. Even if your house burns down or your computer is stolen, your files are safe on the cloud.

• Popular options: Google Drive (15GB free), Microsoft OneDrive (5GB free, 1TB with Microsoft 365), iCloud (5GB free), Backblaze (unlimited backup for about $9/month).
• Pros: Automatic, off-site, accessible from anywhere, protected against physical disasters.
• Cons: Requires internet, ongoing monthly cost for large storage, initial upload can take days depending on your internet speed.

Backblaze is our favorite dedicated cloud backup service. It backs up everything on your computer automatically in the background for a flat monthly fee. Set it and forget it. If you ever need to restore, you can download your files or they'll even mail you a hard drive with everything on it.

Google Drive and OneDrive are great for syncing specific folders — Documents, Photos, Desktop — but they're not full computer backups. They won't save your programs, settings, or system files. Think of them as a supplement, not a complete solution.

4 Option 3: Windows Built-In Backup

Windows has built-in backup tools that most people don't know exist. They're free and surprisingly capable:

Windows Backup (Windows 11): Go to Settings → Accounts → Windows Backup. This backs up your folders, apps, settings, and credentials to your Microsoft account / OneDrive. It's designed to make setting up a new PC seamless — your stuff follows you.

File History (Windows 10 and 11): Go to Settings → Update & Security → Backup (Windows 10) or search for "File History" (Windows 11). Connect an external drive and turn it on. File History automatically saves copies of your files at regular intervals and lets you go back to previous versions — like a time machine for your documents.

System Image Backup: For a complete snapshot of your entire computer — Windows, programs, settings, and all files — search for "Backup settings" and choose "Go to Backup and Restore (Windows 7)." Yes, it's labeled "Windows 7" but it still works. Create a system image on an external drive for a full restore option.

5 Option 4: Mac Time Machine

If you're on a Mac, Apple made this incredibly easy with Time Machine — and honestly, it's one of the best built-in backup tools any operating system has ever had.

• Plug in an external drive.
• Go to System Settings → General → Time Machine.
• Select the drive and turn it on.

That's it. Time Machine automatically backs up your entire Mac every hour, keeping hourly backups for the past 24 hours, daily backups for the past month, and weekly backups for everything older. When the drive fills up, it deletes the oldest backups to make room.

If something goes wrong — you accidentally delete a file, your Mac needs to be wiped, or you buy a new Mac — Time Machine lets you restore everything exactly as it was. It even lets you browse through old versions of individual files and pull back the one you need.

6 How Often Should You Back Up?

The short answer: as often as you'd be comfortable losing that much work. Here's a practical guide:

• Daily — if you use your computer for work, business files, or anything you create regularly. File History and Time Machine do this automatically.
• Weekly — if you're a casual home user who mostly browses, emails, and does light document work.
• After any major change — downloaded all your vacation photos? Just finished a big project? Back it up right now.

The best backup is the one that happens automatically. If it requires you to remember to do it manually, you'll forget. That's why we recommend setting up File History, Time Machine, or a cloud service that runs in the background — and then testing it once to make sure it's actually working.

Don't Wait Until It's Too Late

Every week we see customers who wish they'd spent 30 minutes setting up a backup. Data recovery is expensive, time-consuming, and not always possible. A backup is cheap, easy, and gives you complete peace of mind.

If you need help setting up a backup system, choosing the right external drive, or recovering data from a failed computer, that's exactly what we're here for. We'll set it up right the first time so you never have to think about it again.