How to Fix Long Boot Time on Windows

Shorten long Windows boot times by removing junk files and unnecessary startup apps with Kudu.

By Kudu Team

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Run a free system scan to detect and resolve this issue automatically — no manual steps required.

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What Causes This?

Long boot times on Windows usually happen when too many programs launch at startup, your system drive is cluttered with junk files, or background services take too long to load. Outdated drivers, pending Windows updates, and low free disk space can also slow the startup process. On older PCs, a traditional hard drive instead of an SSD can make boot times much worse.

Common Symptoms

  • Windows sits on the loading screen for much longer than usual
  • The desktop appears, but apps and icons take a long time to become usable
  • Startup programs open slowly or all at once after sign-in
  • The PC feels frozen or sluggish for the first few minutes after boot
  • Restarting or powering on takes noticeably longer than before

How to Fix It Manually

  1. Disable unnecessary startup apps

    • Open Task Manager with Ctrl+Shift+Esc.
    • Click More details if you only see the simple view.
    • Open the Startup tab.
    • Look at the Startup impact column and disable apps you do not need at boot by right-clicking them and selecting Disable.
    • Leave security software, audio drivers, and touchpad or graphics utilities enabled unless you know what they do.
  2. Free up disk space and remove temporary files

    • Press Windows + I to open Settings.
    • Go to System > Storage.
    • Click Temporary files and review what Windows found.
    • Check items like temporary files, thumbnails, and Windows update cleanup if available, then click Remove files.
    • Try to keep at least 15-20% of your system drive free for better performance.
  3. Check for Windows updates

    • Open Settings > Windows Update.
    • Click Check for updates.
    • Install any pending updates, especially cumulative updates and driver updates.
    • Restart your PC after the updates finish, even if Windows does not force it immediately.
  4. Turn off Fast Startup if it is causing issues

    • Press Windows + S, type Control Panel, and open it.
    • Go to Hardware and Sound > Power Options > Choose what the power buttons do.
    • Click Change settings that are currently unavailable.
    • Under Shutdown settings, uncheck Turn on fast startup.
    • Click Save changes, then restart and test boot time again. On some systems Fast Startup helps, but on others it can cause delays or odd startup behavior.
  5. Scan for drive or system file problems

    • Press Windows + S, type cmd.
    • Right-click Command Prompt and choose Run as administrator.
    • Run this command:
      1. sfc /scannow
    • Wait for the scan to finish and repair any issues it finds.
    • If your PC still boots slowly, restart and see whether startup improves.
  6. Reduce background apps and clean boot if needed

    • Press Windows + R, type msconfig, and press Enter.
    • Open the Services tab and check Hide all Microsoft services.
    • Click Disable all to turn off non-Microsoft background services temporarily.
    • Restart your PC and test boot speed.
    • If boot time improves a lot, re-enable services a few at a time until you find the slowdown.

Fix It Automatically with Kudu

Kudu can quickly find the junk files, bloated startup apps, and unnecessary background items that make Windows take too long to boot. Instead of checking each setting manually, it scans your PC and helps you clean up the problems safely in a few clicks.

Download Kudu Free →

Fix this automatically with Kudu

Run a free system scan to detect and resolve this issue automatically — no manual steps required.

Download Kudu Free →