Before You Bin It: The Calm UK Guide to Repairing or Replacing a Tired PC

There’s a moment every home PC owner recognises. The machine that was fine last week now takes four minutes to show the desktop, the fan sounds like a kettle, and a local shop has quoted £90 to put it right. Across the road, a shiny new desktop is £500. Do you fix the old one or wave goodbye?

This isn’t about being tight-fisted or sentimental. It’s about spending money where it actually solves the problem. A £90 fix can be brilliant value — or it can be the first instalment on a machine that’s already living on borrowed time. Here’s how to make the call calmly, with a UK repair-shop mindset rather than a sales pitch.

Start With a Proper Diagnosis, Not a Guess

“Slow” and “broken” are different problems, and they deserve different answers. A machine that boots but crawls is often a storage or software issue: a tired hard drive, too little memory, a startup list full of junk, or Windows having a bad week. Those are usually cheap fixes. A machine that won’t turn on at all could be a power supply, a dead motherboard, a failed screen or a swollen battery — and the price range is much wider.

Before you agree to anything, ask for a written diagnosis and a fixed quote. A reputable UK repair shop will usually charge £30–£60 for a diagnostic, sometimes waived if you go ahead with the repair. That fee is money well spent: it stops you buying a new PC when a £70 solid-state drive would have done the job, and it stops you pouring £150 into a machine that’s beyond sensible repair.

The Repair-Shop Maths

As a rough 2026 guide, common UK repair prices look like this:

• Fitting a new SSD and migrating your data: £70–£120
• Adding RAM: £50–£90, depending on the memory type
• Cleaning out dust and replacing a noisy fan: £50–£90
• New laptop screen: £100–£180
• Replacement power supply: £60–£100
• Windows reinstall and setup: £60–£100
• Motherboard replacement: often £150–£250, and frequently not worth it on an older machine

New desktop towers start around £400–£500 for something basic but usable; a reasonable laptop is £450–£600. So the question isn’t simply “is the repair less than £500?” It’s “what fraction of a new machine am I spending, and what am I getting for it?”

A useful rule of thumb: if the repair is under a third of the cost of a suitable replacement, and the PC still does what you need, repair is usually the sensible choice. If it’s heading towards half the price of a new machine — especially on a PC that’s five or more years old — replacement starts to look less extravagant.

Age, Windows 11 and the Support Question

Age matters, but not in a blunt “anything over three years is junk” way. A well-built desktop from 2019 with a decent processor can comfortably last another few years. The bigger question is software support.

Windows 10 reached the end of standard support in October 2025. Windows 11 has stricter hardware requirements: broadly, a supported processor, TPM 2.0 and Secure Boot. Many PCs from around 2018 onwards are fine; plenty of older ones are not officially supported. If your machine can’t run Windows 11, a repair may still be worthwhile for a spare-room PC or a child’s homework machine — but you need to be comfortable with the security and update situation. Don’t let a shop gloss over it.

Don’t Forget the Hassle Factor

A repair keeps your files, your printer settings, your saved passwords and the way everything is arranged. A new PC means transferring data, reinstalling software, hunting down licence keys and re-adding the home printer that only works when you plug it in first and whisper. For a non-technical user, that’s not a minor detail. It’s an evening — or three.

That hassle has a real cost. If a £90 repair buys you another two years of a familiar setup, it may beat a £500 replacement even if the new machine is faster on paper.

The Environmental Case, Without the Guilt Trip

Making a new PC has a carbon footprint; repairing an old one usually avoids most of it. Keeping a machine going for another couple of years is rarely the wrong choice environmentally. When a PC really is finished, don’t put it in the bin — take it to a household waste recycling centre or a retailer that offers WEEE recycling. Remove your data first, or ask the shop to do it properly.

A Simple Checklist Before You Ring the Shop

Ask yourself:

1. What is actually wrong? Has it been properly diagnosed, or are we guessing?
2. What is the fixed repair quote, including parts and labour?
3. How old is the PC, and does it meet Windows 11 requirements?
4. Does it still do the jobs you need — browsing, email, video calls, homework, light photo editing?
5. Is the repair under roughly a third of the cost of a suitable replacement?
6. Will the repair come with a warranty on parts and labour?
7. Have you backed up anything important before it leaves the house?
8. Are you replacing it because it’s failing, or because you fancy a new one? Both are allowed — just be honest.

When Replacement Wins

Replace rather than repair when the diagnosis is expensive and the machine is old or unsupported: a failed motherboard in a 2015 laptop, a screen and hinge repair on a machine that can’t run Windows 11, or a repair quote that creeps past half the price of a new PC. Also replace if your needs have genuinely changed — if you’ve started editing video or running a small business from home, a repair won’t fix a machine that was never designed for the job.

When Repair Wins

Repair when the fix is targeted and the rest of the machine is sound: an SSD upgrade in a desktop that’s otherwise fine, a new power supply in a good tower, a fan clean and a RAM bump in a 2019 laptop. These are the £90 fixes that make the repair shop look like a bargain.

The Calm Verdict

There’s no prize for buying new, and no medal for keeping a dying PC alive. The sensible path is to get a proper diagnosis, ask for a fixed quote, check Windows 11 support and do the rough maths against a replacement. If the repair is cheap, the machine still fits your life and the data transfer hassle is real, fix it. If the repair is expensive and the machine is old, unsupported or no longer up to the job, replace it without guilt.

Either way, you’ll have made the decision with your eyes open — which is more than most people manage in the queue at the till.