Quick answer: To speed up Windows 11, start by disabling unnecessary startup apps in Task Manager, then free up disk space with Storage Sense, reduce visual effects, turn off background apps, and set the power mode to Best performance. If your PC still runs on a mechanical hard drive, upgrading to an SSD is the single biggest speed improvement you can make.
A sluggish PC is rarely broken. More often it is buried under startup programs, low disk space, and background processes competing for resources. The good news is that most of the fixes below are free, take only a few minutes, and use tools already built into Windows 11. Work through them from easiest to most impactful and you will notice a snappier machine, often without spending a cent.
The fastest ways to speed up Windows 11
Here is an overview of the most effective fixes, ranked by how much effort each takes versus the payoff you can expect.
| Fix | What it does | Effort | Impact |
|---|---|---|---|
| Disable startup apps | Cuts boot time and background load | Low | High |
| Free up disk space (Storage Sense) | Removes temp and junk files automatically | Low | Medium |
| Reduce visual effects | Frees resources from animations and transparency | Low | Medium |
| Turn off background apps | Stops idle apps consuming CPU and RAM | Low | Medium |
| Set power mode to Best performance | Prioritizes speed over energy saving | Low | Low–Medium |
| Keep Windows and drivers updated | Delivers fixes and performance improvements | Low | Medium |
| Upgrade to an SSD | Dramatically faster boot, load and file access | High | Very high |
1. Disable unnecessary startup apps
This is the highest-impact change most people can make. Every program that launches at boot slows startup and keeps running in the background. To trim the list, press Ctrl + Shift + Esc to open Task Manager, click Startup apps, sort by Startup impact, then right-click anything you do not need at boot and choose Disable. Good candidates include chat clients, updaters, and manufacturer utilities. Leave security software and essential drivers enabled. Machines weighed down by many startup apps can boot noticeably slower, so this one fix often delivers the most obvious difference.
2. Free up disk space with Storage Sense
A drive that is nearly full slows down, because Windows needs breathing room for temporary files and virtual memory. Aim to keep roughly 10–20% of your system drive free. Go to Settings > System > Storage and turn on Storage Sense, which automatically deletes temporary files, empties the Recycle Bin, and can clear old downloads on a schedule you set. For a deeper clean, use the built-in Disk Cleanup tool to remove old Windows Update files, which can reclaim several gigabytes.
3. Reduce visual effects
Windows 11’s animations, shadows and transparency look nice but consume resources, especially on older or lower-end hardware. Open the Start menu, search for Adjust the appearance and performance of Windows, then select Adjust for best performance and click OK to switch off the heaviest effects at once. You can also disable transparency separately under Settings > Personalization > Colors by turning off Transparency effects. The interface looks a little plainer but feels more responsive.
4. Turn off background apps
Many apps keep running and syncing even when you are not using them. Go to Settings > Apps > Installed apps, click the three-dot menu next to an app, choose Advanced options, and set Background apps permissions to Never for apps that do not need to run constantly. This frees up CPU, memory and, on laptops, battery.
5. Set the power mode to Best performance
By default, Windows may favor energy savings over raw speed. Go to Settings > System > Power & battery and set the Power mode to Best performance. On a desktop this is essentially free speed; on a laptop it trades some battery life for responsiveness, so you may prefer to switch it only when plugged in.
6. Keep Windows and drivers updated
Updates are not just about security. They frequently include performance and stability improvements, and up-to-date graphics and chipset drivers can make a real difference. Check Settings > Windows Update and install pending updates, then restart. For graphics drivers, the manufacturer’s app (from Intel, AMD or NVIDIA) often has newer versions than Windows Update.
7. Scan for malware
Sudden, unexplained slowness can signal malware chewing through resources. Run a full scan with Windows Security (built in) under Settings > Privacy & security > Windows Security > Virus & threat protection. Removing hidden background threats can restore performance you did not realize you had lost.
8. Upgrade your hardware (the biggest leap)
Software tweaks help, but hardware sets the ceiling. Two upgrades transform an aging PC:
- Switch to an SSD. If your PC still uses a mechanical hard drive, moving Windows to a solid-state drive (NVMe if your system supports it) is the single most dramatic upgrade, typically outperforming any software tweak for boot and load times.
- Add more RAM. If you routinely juggle many browser tabs or apps and see high memory usage in Task Manager, going from 8GB to 16GB (or more) reduces slowdowns from the system swapping to disk.
Frequently Asked Questions
What is the number one way to speed up Windows 11?
Disabling unnecessary startup apps in Task Manager is the highest-impact free fix for most people, since fewer programs at boot means a faster startup and lighter background load. If your PC uses a mechanical hard drive, upgrading to an SSD is the biggest overall improvement.
Does clearing disk space really make Windows faster?
Yes, when the drive is nearly full. Windows needs free space for temporary files and virtual memory, so keeping 10–20% of the system drive free helps avoid slowdowns. Storage Sense automates the cleanup.
Will turning off visual effects hurt anything?
No. It only removes animations, shadows and transparency. The interface looks slightly plainer but functions identically and often feels more responsive, especially on older hardware.
Is it safe to disable startup apps?
Yes, for most apps. Disable non-essential programs like chat clients, updaters and manufacturer utilities, but leave security software and core drivers enabled. Disabling a startup app does not uninstall it; it just stops it launching automatically.
How much RAM do I need for Windows 11 to run smoothly?
8GB is the practical minimum, but 16GB is the comfortable sweet spot for multitasking and many browser tabs. If Task Manager shows memory consistently maxed out, adding RAM will help.
Do I need third-party “PC cleaner” software?
Generally no. The built-in tools, Task Manager, Storage Sense, Disk Cleanup and Windows Security, cover what most users need. Many third-party cleaners offer little real benefit and some add their own bloat.
The takeaway
Speeding up Windows 11 is mostly about clearing away what you do not need: fewer startup apps, more free disk space, lighter visual effects, and fewer background processes. Start with the low-effort, high-impact fixes at the top of the table and you will likely feel a difference within minutes. If your machine still lags after the software tweaks, an SSD or a RAM upgrade is the surest way to give an older PC a genuine second life.
