To speed up a slow Windows PC, first find what is holding it back, then try the matching low-risk fixes: close apps and restart, install updates, scan for malware, free storage, and reduce unnecessary startup activity. Results vary by device; Microsoft notes that older PCs with outdated hardware may not improve significantly.
Start by finding what is slow
A slow startup, sluggish apps, and a PC that stalls during ordinary work can have different causes. Low storage, too many apps running at once, outdated software, malware, and aging hardware are among the possibilities. Microsoft recommends trying multiple remedies rather than assuming one fix addresses every slowdown.
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Check resource use in Task Manager
- Press Ctrl + Shift + Esc to open Task Manager. If it opens in a compact view, select More details.
- On the Processes page, review CPU, memory, and disk use to see whether a particular app is consuming substantial resources.
- Close an app only if you recognize it and are sure you do not need its current work. Ending an unfamiliar process can interrupt an application or a Windows function.
- Open Startup apps to review which apps launch when you sign in and their listed startup impact.
Task Manager helps identify a likely bottleneck; it does not prove that every high-use process is unnecessary. Save work before closing applications.
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1. Close apps and browser tabs, then restart
Too many open apps or browser tabs can burden a PC with limited resources. Close what you are not using. If the computer remains sluggish, restart it from Start > Power > Restart.
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2. Install relevant Windows updates
Open Settings > Windows Update and select Check for updates. Install applicable updates and restart if Windows asks. Updates can include fixes and performance improvements; optional driver updates are not automatically beneficial for every device, so install them when they are relevant to your hardware or resolve a specific issue.
3. Scan for malware
Malware can consume processor and disk resources. Open the Windows Security app, select Virus & threat protection > Quick scan, and follow any recommended action. If the scan finds a threat, use Windows Security’s instructions to address it.
Free storage without deleting files blindly
A nearly full drive can make it harder to install updates and manage files. Windows provides built-in views for checking storage and removing selected temporary items. Review the deletion list before confirming, especially when it includes personal files or files from a previous Windows installation.
4. Review Storage settings
- Open Settings > System > Storage.
- Review the categories to see what is using space. Select Temporary files or Cleanup recommendations to inspect possible cleanup items.
- Select only the items you intend to remove, then confirm the cleanup.
5. Use Storage Sense deliberately
In Settings > System > Storage, open Storage Sense and review its settings before turning it on or changing its schedule. It can remove unneeded temporary files and items in the Recycle Bin. Check what Windows will remove so you do not lose files you meant to keep.
6. Uninstall apps you no longer use
Open Settings > Apps > Installed apps (the label can vary by Windows version), find an app you recognize and no longer need, and choose Uninstall. Removing unused apps can free storage and reduce background activity. Do not remove unknown system components simply because their names are unfamiliar.
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Reduce what runs when you sign in
7. Disable unnecessary startup apps
In Task Manager, open Startup apps, select an app you recognize and do not need immediately at sign-in, then choose Disable. Disabling startup launch does not uninstall the app; you can open it when needed. Keep tools you intentionally rely on at startup, such as security software, synchronization apps, or device utilities.
8. Limit background activity where the setting exists
Some apps offer a background-permission control in Windows settings; available controls vary by app and Windows version. Check an app’s settings or its entry under Settings > Apps rather than assuming that one Windows switch governs every desktop program. Restrict only background activity you do not need, since syncing, notifications, or updates may stop while an app is not open.
9. Reduce unneeded notifications
Open Settings > System > Notifications and turn off notifications from apps that do not need to interrupt you. This is mainly a way to reduce distractions; do not expect it to resolve a major CPU, memory, or storage bottleneck.
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10. Reduce visual effects if responsiveness matters more than polish
Windows visual effects use system resources. Search Windows for Adjust the appearance and performance of Windows, open the result, and select Adjust for best performance on the Visual Effects tab. This reduces visual polish. If you prefer, leave the setting at a more attractive option or turn off only selected effects instead.
11. Select a suitable power mode
Open Settings > System > Power & battery (or Power on some devices) and choose a power mode. Balanced is a sensible default for everyday use. Best performance may suit demanding work, especially when plugged in, but can use more power, shorten laptop battery runtime, and make the device warmer.
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Let Windows optimize the drive
12. Use Optimize Drives
Search Windows for Defragment and Optimize Drives, open the tool, select a drive, and choose Optimize if Windows indicates it is appropriate. Use this built-in interface rather than repeatedly running a manual defragmentation routine, particularly for an SSD; Windows handles the appropriate optimization operation for the drive.
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13. Treat the hardware bottleneck, not just the symptoms
If Task Manager shows sustained resource pressure, storage cleanup and startup changes do not help, and the PC is older, hardware may be the limiting factor. Microsoft says PCs with slow storage such as HDDs are typically slower to use than devices with SSD or eMMC storage. A compatible SSD may be a future option if an HDD is the bottleneck, but upgrade compatibility depends on the specific PC’s interface and form factor. Check the computer’s model and manufacturer guidance before buying anything.
Microsoft cautions that older PCs with outdated hardware may not see significant improvement from software changes; in such cases, upgrading the device may be the best long-term solution. No one setting or cleanup step guarantees a particular speed increase.
Windows 10 support is a separate issue
Windows 10 support ended on October 14, 2025. Microsoft says free software updates, technical assistance, and security fixes are no longer provided after that date. Performance tuning does not restore security support. If considering Windows 11, first check whether the PC’s hardware meets its requirements; not every Windows 10 computer can move to Windows 11.
Avoid risky shortcuts and protect your files
- You do not need a third-party PC optimizer to perform these built-in Windows maintenance steps. Microsoft warns that potentially unwanted apps may show unwanted ads, perform cryptomining, or offer other unexpected apps. Prefer Windows tools and trusted download sources.
- Do not disable unfamiliar processes or uninstall system components just to make a list shorter.
- Resetting or reinstalling Windows is more disruptive than the steps above. Back up important files first: some recovery options can cause data loss, and Microsoft advises starting with the least disruptive recovery option.
Microsoft’s guidance: Tips to improve PC performance in Windows; Configure Startup applications in Windows; Storage settings in Windows; Change the power mode for your Windows PC; Protect your PC from unwanted software; Recovery options in Windows.
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