How to Speed Up a Slow Computer: A Local Tech’s Quick Checklist

A computer that used to feel snappy and now takes forever to open a browser doesn’t necessarily need replacing. Before you write it off and start shopping for a new one, run through this checklist — most slow computers have one or two specific causes, and they’re usually fixable in under an hour.

See what’s actually running in the background

Open Task Manager (Ctrl+Shift+Esc on Windows) and sort by CPU or memory usage. It’s common to find browser tabs, sync tools, or update checkers quietly eating resources in the background without you ever opening them. Closing or uninstalling programs you don’t recognise or use is often the single biggest speed win available.

Check how much free space is left on the drive

Windows and macOS both slow down significantly once a drive gets close to full — anywhere under 10-15% free space starts causing real performance problems, not just an inconvenience. Clearing out old downloads, duplicate files, and programs you no longer use can make a noticeable difference within minutes.

Look at what’s set to start with your computer

Every program that loads automatically at startup adds to how long your computer takes to become usable, and many keep running in the background afterwards too. In Windows, the Startup tab in Task Manager lets you disable anything that doesn’t need to launch immediately — most software doesn’t.

Consider whether it’s still running on a mechanical hard drive

This is the big one. If your computer is more than four or five years old and has never had an upgrade, there’s a good chance it’s still running on a traditional spinning hard drive rather than an SSD. Swapping to an SSD is consistently the single most noticeable upgrade you can make to an older computer — often turning a five-minute boot time into under a minute, for a fraction of the cost of a new machine.

Run a proper malware and junk software scan

Slowdowns caused by malware or bundled “helper” software are more common than people expect, especially on computers that have been in general household use for a while. A proper scan (not just whatever came free with the computer) can catch things that quietly consume resources in the background.

When it’s worth bringing in

If you’ve worked through all of the above and it’s still crawling, or you’re not comfortable digging into Task Manager and startup settings yourself, that’s exactly the kind of job we sort out quickly. We diagnose and speed up computers at a flat $150 an hour, and a hard drive-to-SSD upgrade is one of the most common — and most satisfying — jobs we do. Get in touch through the contact page or call (07) 5227 8266 and we’ll take a look.

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