Slow laptop? Ten checks before you buy a new one

Short answer. Most slow business laptops are not worn out. Work through these ten checks in order: a real restart, pending updates, disk space, what is actually running, sync clients, browser tabs and extensions, duplicate security software, start-up programs, a malware scan, and memory. That fixes the majority of machines under four years old in under an hour. Replace it when it is over five years old, still has a spinning hard disk, has under 8GB of memory, or cannot run a supported operating system.

I get this call every week. Here is the order I go through, and why.

1. Restart it properly

Not sleep. Not closing the lid. Not even “Shut down” on Windows, because Fast Startup keeps parts of the previous session and a machine can go weeks without a true restart. Choose Restart from the Start menu. On a Mac, the Apple menu, Restart.

A surprising number of “slow for a month” laptops are fixed here. If it helps, make a weekly restart a habit.

2. Let updates finish

Windows and macOS updates can sit half-installed, using the disk and processor in the background for days. Open Windows Update or System Settings, Software Update, and let anything pending complete, including the restart it asks for. Do the same for Microsoft 365 apps (File, Account, Update Options in any Office app).

3. Check disk space

A drive over about 90 percent full makes everything slow, because the operating system has no room to work. Settings, System, Storage on Windows; Apple menu, About This Mac, Storage on a Mac. Empty the Downloads folder and the Recycle Bin, and look for old video files. If the drive is small (128GB) and permanently full, that is a hardware problem and points towards replacement.

4. See what is actually running

Open Task Manager (Ctrl+Shift+Esc) or Activity Monitor and sort by CPU, then by memory, then by disk. You are looking for one thing hogging a resource: a browser tab with a runaway video ad, a stuck Outlook, an indexing service, or a cleaner app you forgot installing. End it, or uninstall it if it is something you do not recognise and do not need.

5. Check the sync clients

OneDrive, Dropbox and Google Drive all sit in the background. Click the icon in the system tray. If it is processing thousands of files, someone has synced a folder they did not need, or a big library has just been shared. Let it finish, or unsync the folder. A laptop syncing an entire company SharePoint is a laptop that is always busy.

6. Browser tabs and extensions

Sixty open tabs is not a personality, it is memory usage. Close what you are not using, and go through extensions (the puzzle-piece icon in Chrome or Edge) and remove anything you did not deliberately install. Coupon finders and “PDF converters” are frequent offenders.

7. Two security products at once

A laptop with Windows Defender plus a trial antivirus that came with it, plus a third one someone installed, will scan every file three times. Keep one. On a managed business machine that should be the one your IT provider manages; uninstall the rest. And uninstall any “PC optimiser” or “cleaner” app; they cause more slowness than they cure.

8. Trim the start-up programs

Task Manager, Startup apps tab (Windows) or System Settings, General, Login Items (Mac). Disable the things that do not need to launch at boot: Spotify, Steam, the printer utility from 2019, the second video-conferencing app. Leave security and sync clients on.

9. Run a proper malware scan

If the machine is slow and behaves oddly (pop-ups, a changed home page, the fan running when idle), run a full scan with your actual security product. On a business machine, tell your IT provider first; a genuinely infected laptop should come off the network before anyone starts clicking.

10. Memory

If the laptop has 8GB or less of memory and the person uses Teams, a browser and Office all day, it is short of memory and will swap to disk constantly. Some laptops can be upgraded for under £50; many modern thin ones cannot. Check the model. If it is upgradeable, this is the cheapest big improvement available. If it already has 16GB, memory is not the problem.

When it really is time to replace

Be honest about these:

• Over five years old. Battery, hinges, keyboard and warranty are all gone.
• A spinning hard disk rather than an SSD. No amount of tidying makes a mechanical disk fast. Some older machines can be upgraded to an SSD cheaply; if not, replace.
• Under 8GB of memory and not upgradeable.
• Cannot run a supported operating system. A laptop stuck on Windows 10 or an old macOS is a security problem regardless of speed.
• Repairs approaching half the cost of a new machine.

Business laptops that do the job for four years without drama sit around £600 to £1,000. Buy from a business range with a three-year warranty rather than the consumer aisle.

The boring truth

Most of what makes a business laptop slow is accumulated: updates, sync, tabs, three security products and a cleaner app. A quarterly ten-minute tidy avoids most of it, and on a managed IT retainer that tidy happens without anyone asking. If a machine in your business has been “a bit slow” for months, that is exactly the kind of thing to mention on a first call.