How to Speed Up a Slow Laptop: 10 Fixes That Actually Work

If you want to speed up a slow laptop, start with the free fixes: trim the apps that launch at startup, free up storage, install updates and restart properly. Those four steps solve most slowdowns. If the machine is still sluggish after that, a cheap hardware upgrade — usually an SSD or more RAM — tends to beat buying a new laptop.

I’ve revived more family laptops than I can count, and the pattern is always the same. Nobody’s computer is “just old”. It’s usually carrying years of background apps, a nearly full drive and a few months of skipped updates.

First, figure out what’s actually slow

Open Task Manager on Windows (Ctrl + Shift + Esc) or Activity Monitor on a Mac. Sort by CPU, then by Memory. If one app is hogging resources, you’ve found your culprit. If memory is constantly near 100%, you need fewer open apps or more RAM. If the disk shows 100% on an older Windows laptop, the drive itself is probably the bottleneck.

10 ways to speed up a slow laptop

1. Cut down startup apps

On Windows, go to Task Manager → Startup apps and disable anything you don’t need the moment you log in. On a Mac, open System Settings → General → Login Items. Chat apps, game launchers and updaters are the usual suspects.

2. Restart — properly

Closing the lid isn’t a restart. Windows’ Fast Startup can also mean “Shut down” doesn’t fully reset the system. Choose Restart at least once a week.

3. Free up storage space

Drives slow down when they’re nearly full. Aim to keep at least 15–20% free. Use Storage Sense on Windows or Settings → General → Storage on macOS, empty the Downloads folder, and move old photos and videos to an external drive or cloud storage.

4. Install system and driver updates

Updates fix performance bugs as well as security holes. Check Windows Update (including optional driver updates) or Software Update on a Mac.

5. Uninstall what you don’t use

New laptops often ship with trial software. Old ones collect toolbars and utilities. Remove anything you don’t recognise or haven’t opened in six months.

6. Tame your browser

For most people, the browser is the heaviest app on the machine. Close tabs you’re not using, remove extensions you don’t need and turn on memory-saving features. Thirty open tabs can use more memory than a video editor.

7. Scan for malware

Unexplained slowness, pop-ups or a fan that never stops can signal malware. Run a full scan with Windows Security or a reputable scanner. If an account was involved, change passwords and switch on two-factor authentication.

8. Check power settings

Battery-saver modes throttle performance. When plugged in, choose a balanced or best-performance power mode.

9. Clean the vents

Dust makes laptops run hot, and hot laptops slow themselves down to protect the chip. A few short bursts of compressed air into the vents (with the laptop off) can make a noticeable difference.

10. Upgrade the SSD or RAM

If your laptop still has a spinning hard drive, swapping it for a solid-state drive is the single best upgrade you can make — boot times often drop from minutes to seconds. Adding RAM helps if you regularly max out memory. Check first: many thin laptops have soldered RAM that can’t be upgraded.

Mac-specific tips

Macs are less prone to clutter, but they still slow down. Check Activity Monitor for processes like Spotlight indexing or iCloud syncing that run after big updates — these usually settle within a day. Keep at least 10–15% of your drive free, because macOS uses spare space for memory swap. If your Mac has an Apple silicon chip, most performance issues come from memory pressure rather than the processor, so closing heavy browser tabs is often the quickest fix.

Windows-specific tips

On Windows, open Settings → System → Storage and turn on Storage Sense so temporary files clear automatically. In Settings → Apps → Startup, disable apps with a “High impact” label first. If your drive is an SSD, you don’t need to defragment it — Windows handles optimisation on its own. If it’s an older hard drive, running Optimize Drives can still help a little.

Habits that keep a laptop fast

• Restart at least once a week, and whenever an update asks you to.
• Keep your browser to a sensible number of tabs, and use bookmarks for the rest.
• Review startup apps every few months — new software sneaks itself in.
• Keep 20% of your storage free and move old media to the cloud or an external drive.
• Don’t install “PC cleaner” or “speed booster” apps; many cause more problems than they fix.

When to reset or replace

If you’ve done all of the above and it’s still painful, back up your files and reset the operating system. A clean install removes years of clutter. If the laptop can’t run a supported version of its operating system any more, it’s time to replace it — running unsupported software isn’t just slow, it’s a security risk. Microsoft’s Windows support pages list the current requirements.

Frequently asked questions

Why is my laptop so slow all of a sudden?

A sudden slowdown usually comes from a new background app, an update installing, a nearly full drive, or malware. Check Task Manager or Activity Monitor to see what’s using resources.

Does more RAM make a laptop faster?

Only if you’re running out of memory. If usage regularly hits 90–100%, more RAM helps a lot. If not, an SSD upgrade will do more.

Will resetting my laptop make it faster?

Often, yes. A reset clears out accumulated software and settings. Back up your files first.

How often should I restart my laptop?

At least once a week. A restart clears memory, finishes updates and stops background processes that build up over time.