10 Ways to Speed Up a Slow Windows 11 PC

If your Windows 11 PC has become painfully slow, you are not alone. Over time, every computer accumulates background processes, outdated drivers, and digital clutter that drag performance down. The good news is that most slowdowns have straightforward fixes.

These are the exact steps that fix most slow computers. Start at the top and work your way down — most people see a noticeable improvement within the first three tips.

1 Disable Unnecessary Startup Programs

This is the single most impactful free fix for a slow PC. Many programs configure themselves to launch at startup without asking, and each one adds seconds to your boot time and eats RAM in the background.

How to do it: Press Ctrl + Shift + Esc to open Task Manager, click the Startup apps tab, and disable anything you don't need running immediately when your computer starts. Common offenders include Spotify, Discord, Teams, OneDrive, and Adobe Creative Cloud updaters.

Leave your antivirus and essential drivers enabled. Disable everything else — you can always launch these programs manually when you need them.

2 Uninstall Programs You Don't Use

Go to Settings > Apps > Installed Apps and sort by size. You will likely find programs you forgot you installed, trial software that came with your PC, and games you played once six months ago. Each one takes up disk space and may run background services.

Be cautious about uninstalling anything you don't recognize — some entries are system components. If you are unsure about a specific program, search its name online before removing it.

3 Turn Off Visual Effects

Windows 11's animations and transparency effects look nice but consume GPU and CPU resources, especially on older hardware. Disabling them makes the interface feel noticeably snappier.

How to do it: Search for "Adjust the appearance and performance of Windows" in the Start menu. Select "Adjust for best performance", then check back on "Smooth edges of screen fonts" so text stays readable. Click Apply.

4 Run Disk Cleanup

Windows accumulates temporary files, old update caches, and error logs that can total several gigabytes. The built-in Disk Cleanup tool handles this safely.

How to do it: Search for "Disk Cleanup", select your C: drive, then click "Clean up system files" for the full options. Check everything except "Downloads" (unless you want to clear that too). On a system that has never been cleaned, this can free 5-15 GB.

For a more thorough cleanup, CCleaner's free version finds additional temporary files that Disk Cleanup misses, though the built-in tool handles the essentials.

5 Check for Malware

Malware is one of the top causes of sudden slowdowns. Crypto miners, adware, and spyware run silently in the background, consuming CPU and memory while you wonder why everything is crawling.

How to do it: Open Windows Security (search for it in the Start menu), go to Virus & threat protection, and run a Full scan. This takes 30-60 minutes but is thorough. For a second opinion, download and run Malwarebytes Free — it catches things Windows Defender sometimes misses.

If your scan finds threats, check out our full guide: How to Tell If Your Computer Has a Virus.

6 Update Windows and Drivers

Outdated drivers — especially graphics drivers — cause poor performance, crashes, and compatibility issues. Windows Update handles most of this automatically, but it is worth checking manually.

How to do it: Go to Settings > Windows Update and click Check for updates. Also click Advanced options > Optional updates to find driver updates. For your graphics card, download the latest driver directly from NVIDIA, AMD, or Intel.

7 Add More RAM

If your PC has 4 GB or 8 GB of RAM and you regularly use multiple browser tabs, this is likely your bottleneck. Windows 11 itself uses about 4 GB, leaving very little headroom on a 8 GB system when you are multitasking.

How to check: Open Task Manager (Ctrl + Shift + Esc), click the Performance tab, and look at Memory. If usage regularly sits above 80%, more RAM will help significantly.

Not sure what type of RAM your PC needs? Use Crucial's System Scanner — it automatically detects your motherboard and tells you exactly which modules are compatible.

8 Upgrade to an SSD

This is the single biggest performance upgrade you can make. If your computer still uses a traditional hard drive (HDD), upgrading to a solid-state drive (SSD) will transform your experience. Boot times drop from 2-3 minutes to 15-20 seconds. Programs open instantly. Everything feels faster because the storage bottleneck disappears.

Want a deeper look at options? Read our full guide: Best SSDs for Upgrading Your PC in 2026.

9 Adjust Power Settings

Windows 11 defaults to "Balanced" power mode, which throttles CPU performance to save energy. If your PC is plugged into a wall outlet, there is no reason not to use full power.

How to do it: Search for "Power plan" in the Start menu, then select High performance. On laptops, you can also click the battery icon in the taskbar and slide the power mode slider to Best performance. This alone can improve responsiveness on systems that were being throttled.

10 Reset Windows (Last Resort)

If nothing else works, a clean reset gives you a fresh start. Windows 11 makes this straightforward with the option to keep your personal files while reinstalling the operating system.

How to do it: Go to Settings > System > Recovery and click Reset this PC. Choose "Keep my files" to preserve your documents, photos, and downloads while removing all installed programs and settings. This process takes 30-60 minutes.

Important: Back up your important files before any reset, even when choosing "Keep my files." Our backup guide walks you through the process step by step.

Still Slow After All That?

If you have tried everything on this list and your PC is still sluggish, the issue may be hardware-related — a failing hard drive, overheating CPU, or a motherboard problem that no software fix can solve. An SSD or RAM upgrade (see the recommended products above) is often the most cost-effective next step.

Related Articles