Windows 11 Slow Startup? Fix Long Boot Times Step by Step

First identify where the delay happens

Use a phone timer for two or three restarts and record the same start and end points. “Feels slow” is hard to compare; a repeatable boot time shows whether a change actually helped.

1. Measure a proper Restart

Choose Start → Power → Restart. Do not only close the lid or use Shut down for the first comparison. Restart completes a full Windows session reload and can finish pending update work.

1. Disconnect nonessential USB drives and docks.
2. Restart and begin timing when the screen goes dark.
3. Stop when the desktop and taskbar respond normally.
4. After login, wait two minutes and open Task Manager.
5. Check CPU, Memory and Disk for the activity that continues after the desktop appears.

A single slow boot after a feature or firmware update is not enough evidence. Compare several normal restarts.

2. Reduce high-impact startup apps

1. Press Ctrl + Shift + Esc.
2. Open Startup apps.
3. Sort by Startup impact.
4. Disable nonessential launchers, chat clients, meeting apps, updaters and utilities you do not need immediately.
5. Keep security software and required touchpad, audio, graphics or keyboard controls enabled.
6. Restart and measure again.

Disabling a startup entry is reversible and does not uninstall the program. Do not remove every item at once. Change a small group, measure, and re-enable anything that provides a feature you need.

3. Complete Windows updates and review recent drivers

Open Settings → Windows Update, install pending updates and use Restart when requested. Then check Update history for the date the slowdown began.

Windows 11 installs recommended drivers automatically and may offer optional drivers under Advanced options → Optional updates. Prefer the PC manufacturer’s current chipset, storage and firmware instructions for the exact model. If boot time became much worse immediately after a driver change, use Device Manager’s Roll Back Driver only for that connected device and only when the option is available.

Avoid automatic driver-updater packages. Startup depends on model-specific storage, chipset and power drivers; “newest” is not useful when it is for the wrong device.

4. Check free space, disk activity and drive health

Open Settings → System → Storage. Review Temporary files carefully and keep reasonable free space for Windows updates, caches and the page file. Check Downloads and the Recycle Bin before deleting them.

After login, sort Task Manager by Disk. If active time stays at 100% for several minutes, follow the dedicated 100% disk usage guide. From Terminal as administrator, you can run a non-destructive file-system scan:

chkdsk C: /scan

Back up immediately when a drive reports health errors, disappears, makes abnormal sounds or becomes progressively slower. Startup optimisation cannot repair failing storage.

5. Test external devices and firmware delay

Shut down, disconnect nonessential external drives, card readers, hubs, docks and USB accessories, then start again. A device that takes a long time to initialise can delay firmware or Windows.

Task Manager may show Last BIOS time on the Startup apps page on supported PCs. A large value points to time before Windows startup apps run. Restore supported firmware defaults if settings were changed, and check the PC manufacturer’s support page for documented firmware updates. Do not flash firmware during unstable power or when the PC frequently freezes.

6. Test Fast Startup instead of assuming it helps

Fast Startup uses a hybrid shutdown state. It can shorten a cold boot, but a full Restart does not use the same state. If Shut down followed by power-on is slow while Restart is normal, test Fast Startup.

1. Search for Control Panel.
2. Open Power Options → Choose what the power buttons do.
3. Select Change settings that are currently unavailable.
4. Record the current Fast Startup setting, change it for testing and save.
5. Shut down, power on and compare more than once.

Keep the setting that is stable and faster on your hardware. If the option is missing, the device’s sleep/hibernation configuration may not support it; do not use registry hacks to force it.

7. Use a clean boot for unexplained service delays

1. Open System Configuration.
2. On Services, select Hide all Microsoft services.
3. Disable the remaining third-party services for testing.
4. Disable enabled Startup apps in Task Manager and record each item.
5. Restart and measure the same way.

If startup improves, re-enable services and apps in groups until the delay returns. Sync tools, security add-ons, device utilities and launchers are common categories, but do not guess—use the comparison. Restore normal startup afterward.

8. Repair Windows files and recognise hardware limits

When Windows components also fail or the slowdown followed an interrupted update, open Terminal as administrator:

DISM /Online /Cleanup-Image /RestoreHealth

sfc /scannow

Run DISM first, allow both commands to finish, then restart. These tools repair Windows system components; they do not turn an old hard disk into an SSD or fix unstable hardware.

Use the manufacturer’s memory and storage diagnostics if startup remains extremely slow in clean boot, Safe Mode or before Windows loads. Repeated drive errors, missing storage, firmware pauses or freezes during diagnostics need hardware attention.

Related Windows 11 startup and performance guides

• Fix a slow login or long Welcome screen
• Fix high CPU usage after startup
• Fix high memory usage
• Fix disk usage at 100%