What Was Happening
The MacBook Pro came in from Barnes SW13 with a request for a health check and, if possible, an operating-system upgrade. It was running macOS Yosemite — several major versions behind — and the immediate frustration was that Chrome had simply stopped working, because modern browsers no longer support an OS that old. Underneath that, the machine was sluggish and cluttered.
The owner had assumed a Mac more or less looks after itself, which is a very widely held belief. This one was a gentle correction to it: left unattended for years, a Mac collects the same junk a Windows PC does.
Our Diagnosis
- Established how far behind the software was. Yosemite is a genuinely old macOS. Beyond the obvious — Chrome refusing to run — an unsupported OS stops receiving Apple’s security updates, which leaves the machine progressively more exposed and less compatible with everything modern.
- Found the adware and junk. A health check turned up a good deal of unwanted software: browser adware, junk extensions and the kind of clutter that builds up over years of clicking “OK” without reading. This is exactly the material people mean when they say a Mac has “lots of viruses” — mostly adware and potentially unwanted programs rather than dramatic malware, but plenty of it.
- Checked the hardware could take an upgrade. Before promising a newer OS, we confirmed the machine could actually run the latest version it was eligible for — Big Sur — so the upgrade would help rather than bog it down.
How We Fixed It
- Cleaned out the adware and unwanted software. We removed the junk apps, adware and unwanted browser add-ons that had accumulated, clearing out the source of the pop-ups and sluggishness.
- Upgraded macOS to the latest supported version. With the machine cleaned up, we brought it up to Big Sur — the newest macOS the hardware supported — restoring security updates and modern browser compatibility in one step.
- Ran a full health check. We confirmed the machine was clean, current and running properly before handing it back.
The Result
The MacBook Pro went home to Barnes clean, up to date and — crucially for the owner — able to run a modern browser again. It went from a neglected machine stuck in the past to a supported, secure one, without any new hardware. The lasting takeaway for the owner was the useful myth-buster: Macs need maintenance too.
Why This Happens
“Macs don’t get viruses” is one of the most stubborn beliefs in computing, and it does real harm — because it persuades owners that a Mac needs no care at all. The truth is more nuanced. Macs are hit by classic, dramatic malware far less often than Windows PCs, which is where the reputation comes from. But they are absolutely prey to adware, junk apps, dodgy browser extensions and potentially unwanted programs — the everyday clutter that slows a machine down and fills it with pop-ups. Our own workshop records show Macs come in for this less than PCs do, but “less” is not “never”.
The second, quieter problem is the operating system itself. A Mac left on an old macOS eventually falls off Apple’s security-update list and out of compatibility with modern software — browsers being the first thing people notice failing. At that point the machine isn’t just slow, it’s exposed. The fix for a neglected old Mac is usually the same two-part job we did here: clean out the accumulated junk, then upgrade to the newest OS the hardware will support. It’s remarkable how often that turns a “dying, infected” Mac back into a perfectly good one.
Local Help in Barnes SW13
If your Mac has become slow, pop-up-ridden or stuck on an old version of macOS that won’t run the software you need, it’s very likely fixable without buying a new machine — a proper clean-up and an OS upgrade go a long way.
We service, clean up and upgrade Macs from our Putney workshop, a short trip from Barnes SW13, and we’ll tell you honestly whether yours is worth keeping (it usually is).
Call 020 7610 0500, drop in to SW15, or use the contact form.
