Guide · slow laptops
Laptop running slow: upgrade it or replace it? How a repairer decides
Your laptop takes minutes to boot, the fan screams at a browser tab, and everything you click gets a spinning cursor. The question you actually want answered is simple: is this machine worth putting money into, or is it done? On the bench, that call takes about ten minutes, and it comes down to a short list of checks. Here's the same logic, so you can make the call yourself — or at least know whether the quote you've been given makes sense.
Last reviewed: 18 July 2026 · by Alien IT Solutions
First, rule out the other cause of slow
If the slowness arrived suddenly, came with pop-ups, new toolbars or a browser that redirects itself, you likely have an infection or junkware problem, not an aging problem — that's a clean-up job, and no hardware upgrade will fix it.
This page is for the machine that has gotten slower gradually, doing the same work it always did.
The two upgrades that actually transform a machine
Dozens of things can be upgraded on paper. Only two reliably turn a slow laptop back into a usable one.
A solid-state drive, if it still has a spinning hard drive. This is the single biggest jump in computing. A mechanical hard drive is the slowest part of an old laptop by an enormous margin — the processor spends most of its life waiting for it. Swap it for an SSD and boot times drop from minutes to seconds, applications open immediately, and the machine feels new, because the part everything was queued behind is gone. If a laptop still has a spinning drive and is otherwise healthy, this upgrade is almost always worth doing.
More RAM, if the machine is swapping. When you run out of memory, the system starts using the drive as pretend-RAM. The drive is thousands of times slower than real memory, so the whole machine bogs down the moment you open one tab too many. The tell: it's fine with one thing open and falls apart with several. Going from a cramped amount of memory to a comfortable one removes that cliff entirely.
Do both on the right machine and you've bought it three to five more years for a fraction of the cost of replacing it.
How to check what you have
You don't need to open anything. Two minutes of looking answers half the upgrade question before anyone quotes you anything.
On Windows
Open Task Manager (Ctrl+Shift+Esc), Performance tab. Under "Disk", look at the drive type — it will say HDD or SSD. Under "Memory", look at how much is installed and how much is in use during your normal workload. If memory sits near 100 per cent and the disk thrashes at 100 per cent alongside it, you're swapping.
On a Mac
Apple menu, About This Mac. Storage tells you the drive type; Memory tells you what's fitted. Activity Monitor's Memory tab shows "memory pressure" — if that graph runs yellow or red during normal use, you're short on RAM.
The machines not worth upgrading
This is where a repairer earns their keep — knowing when to say no. Some machines fail the test before the screwdriver comes out.
! Soldered-RAM ultrabooks
Most thin-and-light laptops from the last decade have memory soldered to the board. What it shipped with is what it dies with. If a soldered 8 GB machine is swapping, no upgrade can fix it. Many of the same machines also have soldered or proprietary storage, which closes the SSD door too. Check before you plan anything: if the spec sheet says "onboard" memory, the upgrade conversation is over.
! Pre-2015 processors
Below a certain CPU generation, an SSD makes the machine pleasant but the processor is still the ceiling — modern browsers and video calls will max it out regardless. You'd be fitting a new engine to a car with a rusted chassis. There's also a hard software line: machines this old fall off the supported list for current operating systems, so you're investing in something that's losing security updates.
! The stacking-faults machine
A tired battery, a cracked hinge, a flaky keyboard — individually each is fixable. Together, on an old machine, they change the maths. Fix the drive and the hinge still creaks; fix the hinge and the battery still dies at lunch. When a laptop needs three repairs plus an upgrade, you're rebuilding it piecemeal at a total cost that lands near a replacement, and you still own an old laptop at the end.
The honest maths
Here's how the sums work, without pretending prices don't move around.
An SSD or RAM upgrade, fitted, costs a small fraction of a decent mid-range laptop. If the machine is otherwise sound — good screen, healthy battery, supported operating system, a CPU from the last several years — that small spend buys years of use, and it's the clear win. It's also the least disruptive option: same machine, same files, same setup, no migration day.
The equation flips as costs stack. Once you're adding a battery replacement, or a hinge, or paid labour on a machine that needs its data migrated anyway, the combined bill starts brushing against the cost of a mid-range replacement that would be faster, lighter, longer-lived and under warranty. A repairer's rule of thumb: when the total work approaches half the cost of the replacement you'd actually buy, replace. Below that, upgrade.
And when it is time to replace, the old machine's SSD rarely goes to waste — it becomes an external backup drive with a cheap enclosure.
If you're stuck mid-decision with a dead machine and work due, that's a different problem — that's what same-day replacement and short-term rental exist for.
The short version
If your slow laptop still has a spinning hard drive, an SSD swap transforms it; if it chokes only when you open too much at once, RAM is the fix. Skip both on soldered-RAM ultrabooks, pre-2015 processors, and machines stacking up other faults — there, the money belongs in a replacement. Rough rule: total repair cost near half a decent replacement means replace.
General guidance only — the right call depends on your specific machine and what you use it for.
Slow laptop and a decision to make?
Tell us the make, model and what it's doing through the contact form. We'll tell you straight whether it's an upgrade job, a clean-up job, or one to stop putting money into.