Most “my laptop is slow” complaints I look at are not about the processor. They are about a nearly full disk, twenty programs starting with Windows, or a hard drive that should have been replaced by an SSD years ago. Work through this list in order; the early items are quick and fix most cases.

1. Restart properly (2 minutes)

Shutting the lid is not a restart, and with Fast Startup even “Shut down” keeps some state. Use Start › Power › Restart. If the laptop feels fine for a day and then slows, something is leaking memory — keep reading.

2. Startup apps (5 minutes)

Press Ctrl+Shift+Esc for Task Manager, open the Startup tab, and disable anything you do not need the moment Windows opens: game launchers, updaters, Teams if you rarely use it, printer utilities. Nothing is uninstalled; they just stop starting on their own.

3. Disk space (5 minutes)

Windows needs free space to breathe. Below about 10% free, everything slows. Open Settings › System › Storage and use Cleanup recommendations. The usual space hogs: Downloads, old Windows update files, a phone backup, and a huge Outlook data file.

4. Is it an SSD? (1 minute)

Task Manager › Performance › Disk shows SSD or HDD. If it says HDD and the disk sits at 100% while you do little, that is your answer. Replacing it with an SSD is the single biggest speed-up for an older laptop — boot time often goes from minutes to seconds — and costs far less than a new machine.

5. Memory (3 minutes)

Task Manager › Performance › Memory. If “In use” is near the total while you work normally, you are short of RAM and Windows is using the disk as overflow. 4 GB is painful for Windows 10 plus a browser; 8 GB is comfortable for office work. Many laptops have a free slot for an upgrade — check the model’s manual.

6. The browser (5 minutes)

Each tab is a small program. Forty open tabs can use more memory than all your other apps combined. Close what you do not need, remove extensions you do not recognise, and turn on the browser’s sleeping-tabs feature if it has one.

7. Updates and security scan (varies)

Pending updates can run in the background and slow everything. Let them finish, restart, then run a full scan with Windows Security. Remove extra antivirus products — two running together slow each other down.

8. Heat (5 minutes)

A laptop that gets hot and loud and then slows down is throttling: reducing speed to protect itself. Use it on a hard surface, not a bed, and clean the vents with compressed air. On laptops older than about four years, a service to replace the thermal paste often helps.

9. Power mode

On battery, Windows may run in a power-saving mode. Click the battery icon and check the slider or power mode setting when plugged in.

When a new laptop really is the answer

• It cannot run the Windows version you need (Windows 11 has strict hardware requirements).
• The RAM is soldered and too small.
• Repairs cost more than half the price of a comparable new one.