How to Speed Up a Slow Laptop
Laptops rarely slow down because of age itself. They slow down because software accumulates, storage fills, and the machine ends up doing far more in the background than it did when new.
Work through these in order. The early steps are free and fix most cases.
1. Restart it properly
Closing the lid is sleep, not a restart. A machine that has been sleeping for weeks has accumulated memory leaks and stalled processes.
On Windows, use Restart rather than Shut Down, because fast startup means shutting down does not fully clear everything.
2. Cut what starts automatically
This is the biggest free win. Every installed program wants to launch at startup, and each one takes memory permanently.
- Windows: Task Manager, Startup apps tab. Disable anything you do not need immediately on login.
- macOS: System Settings, General, Login Items.
Chat apps, update helpers, cloud sync tools and launchers are the usual culprits. Disabling startup does not uninstall anything; the program still opens when you click it.
3. Free up storage
Drives slow noticeably when nearly full, because the system needs free space for temporary files and virtual memory. Aim to keep at least 15 to 20 per cent free.
- Empty the recycle bin or trash
- Clear downloads, which is usually where large forgotten files live
- Use Windows Storage Sense or macOS Manage Storage
- Move photos and video to an external drive or cloud
- Uninstall programs you no longer use
4. Find what is actually using resources
Instead of guessing, look. Task Manager on Windows, Activity Monitor on macOS.
Sort by CPU, then by memory. One process using most of the machine tells you where to focus. A browser with many tabs is very often the answer, since each tab holds its own memory.
5. Deal with the browser
- Close tabs you are keeping “for later”. Bookmark them instead.
- Remove extensions you do not use. Each one runs on every page.
- Clear the cache occasionally.
6. Check for malware
A machine that became slow suddenly, runs hot, or shows unfamiliar pop ups deserves a scan. On Windows, the built in Microsoft Defender is capable. Running a second full scanner occasionally is reasonable, but running two real time antivirus programs at once causes conflicts and slows things further.
If the slowdown started after clicking a link or attachment, see our guide on phishing.
7. Update, then stop updating constantly
Keep the operating system and drivers current, particularly graphics drivers. Then let updates run on a schedule rather than checking manually, because the update checker itself consumes resources.
8. Clean the vents
A laptop full of dust runs hot, and a hot processor deliberately slows itself to avoid damage. This is thermal throttling, and it is a genuinely common cause of a machine that is fast for ten minutes and slow afterwards.
Compressed air through the vents helps. Using the laptop on a bed or sofa blocks the intakes entirely.
The upgrade worth paying for
If the machine still has a mechanical hard drive, replacing it with an SSD transforms it. Boot times, application launches and file operations all improve by an order of magnitude. It is usually the cheapest upgrade with the largest effect.
Adding RAM helps if you regularly run out, which you can confirm in Task Manager or Activity Monitor. If memory usage sits near capacity with normal work, more RAM will help. If it sits at half, more RAM will do nothing.
Many modern laptops have soldered memory and storage, so check what is replaceable before buying anything.
When to stop spending
If a laptop is more than seven or eight years old, cannot take an SSD or more memory, and struggles with ordinary work after all of the above, further spending is usually poor value.
Frequently asked questions
Do cleaner and optimiser apps help?
Rarely, and some make things worse by running constantly in the background. The tools built into Windows and macOS do the useful parts.
Does a full hard drive really slow a computer?
Yes. Below roughly ten per cent free space, performance degrades noticeably on both SSDs and mechanical drives.
Should I defragment my drive?
Only mechanical drives, and Windows schedules it automatically. Never defragment an SSD; it provides no benefit and adds wear.
How much RAM do I need?
8GB is workable for ordinary use, 16GB comfortable, more for video editing or virtual machines.
Why is my laptop slow only on Wi-Fi?
That is a network issue rather than a machine issue. See our guide on fixing a Wi-Fi connection.
Does resetting Windows fix slowness?
Usually yes, because it removes accumulated software. It is a last resort, and everything should be backed up first.
