A slow computer can make even simple tasks feel frustrating and waste valuable time during your workday. The good news is that most performance issues can be fixed without buying a new device.
In this guide, we’ll walk through 10 proven ways to speed up your computer, improve responsiveness, and help it run more efficiently.
Here are 10 proven ways to speed up your computer.
1. Restart Your Computer
A simple restart is one of the fastest and most effective ways to improve performance. Restarting clears temporary memory usage, stops unnecessary background processes, and resets programs that may be consuming excessive CPU or RAM.
If your computer has been running for several days or has many applications open, a restart can often make it feel noticeably faster right away. If you’re not sure how long it’s been since your last restart, see our guide on how to check your Windows 11 uptime. This is especially helpful if browsers, development tools, video calls, cloud sync apps, or update processes have been running in the background.
Make sure you choose Restart instead of Shut Down, since modern versions of Windows can preserve some session state when shutting down. After restarting, give the computer a minute or two to finish loading background services before testing performance again.
2. Disable Startup Programs
Too many startup applications can dramatically slow down boot time and make your computer feel sluggish immediately after signing in. Many apps automatically launch in the background even if you rarely use them, consuming memory and CPU resources before you even begin working.
Startup applications are one of the most common reasons a computer feels slow right after booting up. Disabling unnecessary startup items can noticeably improve startup speed and free up memory for the tasks you actually care about. If you’re unsure which programs are safe to disable, read our guide on the best startup programs to disable in Windows 11.
On Windows:
- Press Ctrl + Shift + Esc to open Task Manager
- Click the Startup tab
- Review the list of applications
- Disable any apps you do not need immediately after login
Pay close attention to apps marked with a High startup impact, as these often have the biggest effect on boot speed. Be careful not to disable security software, audio drivers, or anything you do not recognize without checking first.
3. Free Up Disk Space
Low available storage space can significantly slow down your computer, especially if your system drive is nearly full. Windows needs free disk space for temporary files, updates, virtual memory, and general system performance.
Start by deleting temporary files, old downloads, and applications you no longer use. On Windows, go to Settings → System → Storage to review what is taking up the most space. If you need detailed step-by-step instructions, see our guide on how to free up disk space on Windows 11. Pay special attention to large folders such as Downloads, Videos, Desktop files, and Recycle Bin.
Removing unnecessary files and unused apps can improve overall responsiveness and help your computer run updates and background processes more efficiently.
4. Check For Malware
Malware, adware, and unwanted background programs can significantly slow down your computer by consuming CPU, memory, disk usage, and network resources without your knowledge. In many cases, a sudden drop in performance can be caused by malicious software running in the background.
On Windows, open Windows Security and run a Quick Scan first. If performance issues continue, run a Full Scan to check all files and installed programs.
To access it:
- Open Start
- Search for Windows Security
- Click Virus & threat protection
- Select Quick Scan
If you use a third-party antivirus tool, make sure its virus definitions are fully up to date before scanning. Removing malware and unwanted software can often lead to an immediate improvement in system responsiveness.
5. Update Your Operating System
Outdated operating systems and drivers can cause slow performance, software instability, and compatibility issues. Updates often include important performance improvements, security patches, and bug fixes that help your computer run more efficiently.
On Windows, go to Settings → Windows Update and click Check for updates. If you’re unsure whether you’re running the latest release, first see our guide on how to check your Windows 11 version. Install any available Windows updates, driver updates, and optional driver updates, then restart your computer if prompted. If you need help updating hardware drivers, follow our guide on how to update drivers on Windows 11.
Keeping your operating system and drivers up to date can improve speed, fix background issues, and ensure your computer is running the latest optimized software from Microsoft and your hardware manufacturers.
6. Upgrade to an SSD
If your computer still uses a traditional hard disk drive (HDD), upgrading to a solid-state drive (SSD) is one of the biggest performance improvements you can make. Unlike older hard drives that rely on spinning disks, SSDs use flash storage, which is significantly faster and more reliable.
After upgrading to an SSD, Windows can boot much faster, applications open almost instantly, and file transfers become dramatically quicker. For older laptops and desktops, this single upgrade can often make the entire machine feel new again.
This upgrade is especially noticeable if your computer takes several minutes to start up, frequently freezes while opening programs, or feels slow when switching between applications.
7. Add More RAM
Adding more RAM (memory) is one of the best ways to improve performance if your computer slows down during multitasking. More memory allows your system to keep multiple applications open at the same time without relying heavily on slower disk storage.
This upgrade is especially helpful if you regularly use multiple browser tabs, video calls, development tools, Microsoft Office apps, or other large applications simultaneously. Low memory can cause your computer to slow down, freeze, or rely heavily on disk paging, which noticeably hurts performance. Before upgrading, you may also want to try reducing RAM usage in Windows 11, since unnecessary background processes and applications can consume memory.
If your system currently has 8 GB of RAM, upgrading to 16 GB can provide a significant improvement for most work and productivity tasks. If you’re unsure whether you need an upgrade, see our guide on how to find out how much RAM you need.
8. Reduce Browser Tabs and Extensions
Web browsers are often one of the biggest causes of slow computer performance, especially if you keep many tabs open throughout the day. Modern browsers such as Chrome, Edge, and Firefox can consume a large amount of memory and CPU resources, particularly when multiple tabs, streaming sites, web apps, and extensions are running at the same time.
Each open tab uses memory, and some websites continue running scripts, videos, or ads in the background even when you are not actively using them. Browser extensions can also slow performance by constantly monitoring pages, injecting scripts, or syncing data.
Close any tabs you are no longer using and remove unnecessary extensions, especially ones that run continuously in the background. Doing this can significantly improve responsiveness, reduce memory usage, and make your computer feel faster during everyday work.
9. Clean Background Processes
Use Task Manager to identify apps or processes using unusually high CPU, memory, or disk resources. Press Ctrl + Shift + Esc to open Task Manager, then review the Processes tab to see which applications are consuming the most system resources.
Sometimes background update tools, cloud sync apps such as OneDrive or Dropbox, antivirus scans, browser processes, or software launchers are responsible for slowdowns. If you notice an application consistently using high resources while you are not actively using it, consider closing it, stopping it from running in the background, disabling it from startup, or uninstalling it if it is unnecessary. For more detailed instructions, see our guide on how to stop programs from running in the background on Windows 11.
Cleaning up background processes can improve responsiveness, reduce lag, and help your computer run noticeably faster.
10. Restart and Test Again
After making the changes above, restart your computer and compare its performance. A fresh restart ensures that updates, closed background processes, disabled startup apps, and other optimizations are fully applied.
Once your computer starts back up, test the tasks that previously felt slow, such as opening applications, launching your browser, switching between tabs, or booting into Windows. Compare startup time, responsiveness, and overall smoothness.
If your computer is still slow after trying these fixes, the issue may be related to aging hardware, failing storage, overheating, or software problems that require deeper troubleshooting. Start by checking your computer specs to determine whether your hardware meets your needs, and check your hard drive health to rule out a failing storage device.
Final Thoughts
A slow computer does not always mean you need to buy a new one. In many cases, simple fixes such as cleaning startup apps, freeing disk space, updating Windows, and reducing browser usage can dramatically improve performance.
Start with the easiest steps first, then move on to hardware upgrades like an SSD or additional RAM if needed. Even older laptops and desktops can often feel dramatically faster after applying these changes.