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

Nothing kills your momentum like a laptop that takes five minutes to boot and another two to open a browser tab. Before you start shopping for a replacement, here’s the good news: most slowdowns are fixable with software changes that cost nothing. This guide walks through how to speed up a slow laptop in triage order — quick wins first, deeper cleanup next, and the honest line where software fixes end and hardware begins.

Start with triage: figure out what “slow” actually means

Laptop slowness comes in three flavors, and each points at a different fix. Slow startup usually means too many programs launch when you sign in. Sluggish everyday use — laggy windows, stuttering video calls — often means something is hogging your CPU or RAM right now. And slow file operations and installs usually mean your drive is nearly full or aging.

You don’t need fancy diagnostic software to tell them apart. Open Task Manager with Ctrl + Shift + Esc and look at the Performance tab. If CPU, Memory, or Disk sits near 100% while you’re barely doing anything, that’s your culprit — and the fixes below are ordered so you tackle the most common causes first.

The three 5-minute fixes

Start here. These take almost no time and resolve a surprising share of slowdowns.

Fix 1: Restart your laptop — properly

This sounds insulting, but hear me out: on Windows 11, choosing Shut down doesn’t fully power down the machine. Windows uses a feature called Fast Startup, which saves the system state to disk instead of truly restarting. That means problems just get reloaded along with everything else. Choosing Start > Power > Restart is the real reset — it clears accumulated background processes and frees memory. If you normally close the lid or use sleep, do a proper restart once a week.

Fix 2: Catch the resource hog in Task Manager

Open Task Manager (Ctrl + Shift + Esc) and click the Processes tab. Click the CPU or Memory column header to sort by usage — whatever sits at the top during a slow moment is your suspect. Common offenders: a web browser with 40 open tabs, an antivirus mid-scan, cloud sync tools re-indexing your files, or an app update running in the background.

Select a process you recognize and don’t currently need, then click End task. Don’t kill anything you don’t recognize — ending a critical system process can crash Windows. If the hog returns every time you boot, the next fix handles it permanently.

Fix 3: Stop apps from launching at startup

Many programs add themselves to your startup list without asking: game launchers, chat apps, music players, update helpers. Each one steals a little time from your boot and sits in memory all day. Open Task Manager, switch to the Startup apps tab, and look at the Startup impact column — Microsoft rates each app High, Medium, or Low based on how much it drags down your boot.

Right-click anything you don’t need the moment you sign in and choose Disable. Spotify, Discord, Steam, Adobe updaters — all classic candidates. Leave your security software enabled. Disabling a startup app doesn’t uninstall it or break it; the app still opens normally when you click it, it just stops ambushing your boot. Microsoft’s own performance guide lists managing startup apps among its first recommendations, so this one is firmly in official territory. (See: Microsoft’s tips to improve PC performance in Windows.)

Clear the clutter: storage, apps, and malware

If the quick wins helped but the machine still feels tired, work through these four.

Fix 4: Free up space with Storage Sense

A nearly full drive slows everything down — Windows struggles with temporary files, updates, and virtual memory when it has no room to breathe. Go to Settings > System > Storage and turn on Storage Sense. It automatically deletes temporary files and files that have been sitting in your Recycle Bin for 30 days, so cleanup happens without you remembering.

While you’re there, open Temporary files and do one manual pass — old Windows Update leftovers can quietly eat tens of gigabytes. Just review the list before confirming, and leave Downloads alone unless you’ve already sorted through it.

Fix 5: Uninstall the apps you never open

Every preinstalled trial, bundled game, and “helper” app you never touch still takes up drive space, and some run background services that chip away at performance. Go to Settings > Apps > Installed apps, sort by size or by what you don’t recognize, and uninstall the dead weight. If you haven’t opened it in six months and it isn’t a driver or a system utility, out it goes. You can always reinstall something you miss.

Fix 6: Run a malware scan

Malware and junkware are notorious CPU and disk hogs — a machine can feel dramatically slower because something malicious is working in the background. You don’t need a third-party scanner for a first pass: go to Settings > Privacy & security > Windows Security > Virus & threat protection and run a Quick scan. If anything looks off, the Full scan digs deeper. Microsoft explicitly lists a malware scan among its performance tips, because threats commonly consume the very resources that make your laptop feel fast.

Fix 7: Install pending Windows updates

Pending updates are a quiet cause of slowdowns: background download and install tasks run while you’re trying to work, and bugs that updates fix can include performance regressions. Go to Settings > Windows Update and install everything on offer, then check Advanced options > Optional updates for driver updates. Outdated graphics drivers in particular are behind a lot of stuttery browsers and laggy video calls. Restart when it asks you to — that’s the update finishing the job.

Squeeze more out of the hardware you have

Windows makes tradeoffs on your behalf to save battery and look pretty. You can override both.

Fix 8: Switch to Best performance power mode

Go to Settings > System > Power & battery and set Power mode to Best performance. This tells Windows to prioritize CPU responsiveness over energy savings. On a desktop-replacement laptop that’s usually plugged in, it’s a no-brainer; on battery, expect shorter runtimes, so you may want to switch back when you unplug. (Microsoft documents the power mode options in its power and battery settings guide.)

Fix 9: Turn down the visual effects

Transparency, animations, and shadow effects cost GPU and CPU cycles, and on older integrated graphics the cost is noticeable. Search the Start menu for “Adjust the appearance and performance of Windows” and open the result. In the Performance Options window, choose Adjust for best performance to kill all the effects at once, or pick Custom and uncheck everything except “Smooth edges of screen fonts” and “Show thumbnails instead of icons” — that combination keeps Windows readable while shedding most of the visual overhead.

When software fixes stop working

Fix 10: Know when the fix is hardware, not software

Here’s the honest part. If you’ve done fixes 1–9 and a laptop that was fine a year ago still struggles, you may be hitting a hardware ceiling. Two upgrades make the biggest difference on older machines: switching a spinning hard drive to an SSD, and adding RAM if your laptop allows it (many thin-and-light models have soldered RAM that can’t be upgraded — check your manufacturer’s specs before buying anything).

Microsoft says it plainly in its performance guide: older PCs with outdated hardware may not see big improvements from software steps, and upgrading can be the best long-term solution. As a rule of thumb, if your laptop is six or more years old, still runs a mechanical hard drive, or has 4 GB of RAM in 2026, money is better spent on the machine than on more tweaking. If you’re heading that way, our guide on the best time to buy a laptop can help you time the purchase for the year’s biggest discounts.

One thing to skip: “PC optimizers” and registry cleaners

When your laptop is slow, it’s tempting to download a “one-click optimizer” that promises to clean your registry and turbocharge everything. Don’t. Microsoft’s official position is that it does not support the use of registry cleaners: they can cause serious system issues that may require reinstalling Windows, and leftover registry entries are usually harmless — they don’t slow your computer down. (See the Microsoft Q&A discussion of registry cleaning utilities.) The same skepticism applies to third-party “driver updaters” and tune-up utilities, which can do more harm than good. The fixes above are the ones that actually work.

If you’re on a Mac

Most of this guide is Windows-focused, but the principles are the same. Open Activity Monitor (in Applications > Utilities) and check the CPU and Memory tabs for runaway processes. Manage what launches at sign-in under System Settings > General > Login Items — remove anything you don’t need immediately. Check your storage in Apple menu > System Settings > General > Storage and clear what’s safe to remove. And as on Windows: restart regularly, install macOS updates promptly, and recognize that an aging Mac with a full drive has the same hardware limits.

Keep it fast

A fast laptop isn’t a one-time project — it’s a small routine. Restart weekly, glance at your startup list after installing new software, keep Storage Sense on, and deal with pending updates the day they land instead of the month after. Do those four things and you’ll spend a lot less time watching spinning dots and a lot more time actually working.