Why is my laptop running slowly?

Note: all the commands below take a while to run so go fix a tea or coffee while they are running. Good luck.

To uninstall your most recent update:

Settings > Update & Security > Windows Update > View update history.

Next, click on Uninstall updates. Look at the list of installed updates. Uninstall the update you just did. If that doesn't help try next one.

System-critical Windows files might be corrupted or damaged and cause slowdown issues in Windows 10.

Try the System File Checker tool following the steps below:

1. Go to the Start menu search bar, type in 'command prompt'.
2. Run the Command prompt as an administrator by right-clicking the search entry and clicking Run as administrator.
3. You will see a black screen with white text. In the Command prompt, type sfc /scannow and hit Enter.

After the scan is complete, reboot your system. If a recent update did cause any corruption, this should fix it.

If that didn't work try:

1. Go to the Start menu search bar, type in 'command prompt'.
2. Run the Command prompt as an administrator by right-clicking the search entry and clicking Run as administrator.
3. In the Command Prompt type DISM /Online /Cleanup-Image /CheckHealth and hit Enter.
4. If there are no corruption issues, you can run a more advanced scan using Dism /Online /Cleanup-Image /ScanHealth
5. If you find corruption issues through the above step, run the Dism /Online /Cleanup-Image /RestoreHealth command to download and replace the damaged files. Restart your computer after the command gets executed, then run the SFC command again to repair any errors.

Unnecessary background apps can cause Windows 10 to slow down after an update. Try disabling them to see if that fixes the problem.

1. Open the Windows Settings.
2. Then, click on Privacy > Background Apps.
3. Choose which apps can run in the background section by turning off all the unimportant apps.

Let us know how it goes.