A slow laptop is one of those problems that starts as a minor annoyance and gradually becomes the thing you complain about every single day. Before you consider throwing it out the window or buying a new one, it’s worth knowing what’s actually going on under the hood – because in most cases, it’s fixable.
We see slow laptops come through our doors at 141 Auburn Road every week, and the cause is almost never what people expect. Here’s what we actually find.
Too much is running in the background
This is the most common culprit we see, and most people have no idea it’s happening. Every time you install a program – a PDF reader, a printer driver, a video call app – there’s a reasonable chance it has quietly added itself to your startup list. That means every time you turn your laptop on, a dozen programs are all trying to load at once before you’ve even opened a browser tab.
On Windows, you can check this yourself. Open Task Manager (Ctrl + Alt + Delete), click the Startup tab, and have a look at what’s in there. Anything you don’t recognise or use regularly can be disabled. It won’t delete the program, it just stops it from loading every time you boot up.
This alone can make an older laptop feel noticeably faster.
Your storage drive is old, full, or the wrong type
If your laptop still has a traditional spinning hard drive (HDD) rather than a solid state drive (SSD), that’s often the single biggest reason it feels slow. HDDs have moving parts and read data at a fraction of the speed of an SSD. Running Windows 11 on an HDD in 2025 is genuinely painful – the operating system just wasn’t designed for it.
An SSD upgrade is one of the most cost-effective repairs we do. A laptop that takes three minutes to boot and stutters opening basic programs can feel completely different with an SSD installed. Boot times typically drop from a couple of minutes down to around 15 seconds.
Beyond the drive type, a nearly full drive also causes slowdowns. Windows needs free space to function properly – as a rough guide, try to keep at least 10-15% of your storage free at all times. If your C: drive is sitting at 95% capacity, that’s going to hurt performance.
<span style=”color:#FF6B4E“>[Image suggestion: screenshot comparison of HDD vs SSD boot time, or a photo of an SSD next to an old spinning hard drive for visual context]</span>
Not enough RAM for what you’re asking it to do
RAM is your laptop’s short-term working memory. When you have too many programs open – or even just a lot of browser tabs – your laptop runs out of space to keep everything active and starts using the hard drive as a substitute. That’s called paging, and it’s slow.
Most laptops sold in the last few years come with 8GB of RAM, which is fine for everyday use. If you’re regularly running video calls, editing documents, and streaming music at the same time, 8GB can start to feel tight. 16GB is a comfortable amount for most people. If your laptop supports a RAM upgrade, it’s usually a straightforward and affordable fix.
Malware running in the background
Viruses and malware don’t always announce themselves with pop-ups and warnings. Some of them sit quietly in the background, using your CPU and RAM to do things you really don’t want to know about – crypto mining, sending spam, logging keystrokes. The result from your end is just a slow, hot, sluggish machine with no obvious explanation.
If your laptop has slowed down suddenly rather than gradually, malware is worth ruling out before anything else. Run a full scan with Windows Defender or a reputable third-party tool. If it finds something and can’t clean it up fully, that’s when it’s worth bringing it in.
Overheating causing it to throttle
When a laptop gets too hot, the processor deliberately slows itself down to reduce heat output. This is called thermal throttling and it’s a self-protection mechanism. From your perspective it just feels like the laptop is struggling for no reason – especially under load.
Dust is usually the cause. Over time it builds up inside the vents and around the fan, blocking airflow. Laptops that live on beds, couches, or carpet are particularly prone to this because the soft surface blocks the bottom vents entirely.
We covered overheating in more detail in our earlier post on laptop overheating, but the short version is: if your laptop is hot to touch on the bottom and the fan is constantly loud, dust is a likely factor.
Too many browser tabs and extensions
Browsers are genuinely resource-hungry, and Chrome in particular is well known for gobbling up RAM. If you regularly have 20+ tabs open and a handful of extensions installed, that alone can explain a slow experience – especially combined with any of the above issues.
Try closing tabs you don’t need, and check your browser extensions (in Chrome: Settings > More Tools > Extensions). Remove anything you installed ages ago and forgot about. Some extensions run constantly in the background even when you’re not actively using them.
When the software fixes don’t help
If you’ve worked through the above and the laptop is still dragging, it’s likely a hardware issue – failing hard drive, dying RAM, or thermal paste that’s dried out on the processor. These are all things we can diagnose and fix. We’ll always tell you upfront what we find and what it’ll cost before we do anything.
If it turns out the repair cost doesn’t make sense relative to the age of the machine, we’ll tell you that too. We’d rather give you an honest answer than take your money on a repair that only buys you another year.
You can read more about our laptop repair services here or just drop in – no appointment needed.
Common questions
Why did my laptop suddenly get slow when nothing changed? Sudden slowdowns (rather than gradual ones) usually point to one of three things: a Windows update that installed in the background and is still processing, a virus or malware infection, or a storage drive that’s starting to fail. If restarting doesn’t fix it within a day, it’s worth getting it looked at.
Will a factory reset fix a slow laptop? Sometimes, but not always. A factory reset wipes software clutter and starts Windows fresh, which can help if the slowdown is software-related. It won’t fix a failing hard drive, insufficient RAM, or a dust-clogged cooling system. It’s also a last resort because you lose everything on the machine – so make sure you’ve backed up first.
Is an SSD upgrade worth it on an older laptop? In most cases, yes. If the rest of the machine is in reasonable shape, an SSD upgrade can genuinely extend the useful life of a laptop by several years. It’s one of the better value repairs we do. The main exception is if the laptop has other hardware problems or is simply too old to run modern software efficiently.
How much RAM do I actually need? For everyday use – browsing, email, documents, streaming – 8GB is generally fine. If you regularly run video calls, use Photoshop or video editing software, or keep a lot of programs open at once, 16GB is worth considering. Anything over 16GB is usually overkill for home and small business use.
Sources
- Microsoft – Improve PC performance in Windows – support.microsoft.com/en-au/windows/improve-pc-performance
- Tech Fixer Australia – Why Your Computer Is Running Slow in 2026 – techfixer.com.au/why-your-computer-is-running-slow-in-2026
Buzzline
A slow laptop is almost always a solvable problem – it just takes a bit of digging to find the right cause. Work through the list above and you might be surprised how much of a difference a few changes make. If you get stuck or nothing’s working, drop into 141 Auburn Road, Hawthorn or give us a call on 03 9822 3481. We’ll take a look and let you know exactly what’s going on.