About windows startup sound

Hi ネパリ サンデャ,

Thanks for contacting us. I understand how frustrating it can be to hear the loud startup sound every time your PC boots—especially when the usual setting to disable it doesn’t seem to stick.

Issue Summary

After upgrading to Windows 11, you've attempted to uncheck the "Play Windows startup sound" option in the sound settings, but it keeps re-enabling itself—even after shutdown and restart. This behavior can sometimes occur due to system policies, fast startup settings, or user profile corruption.

Suggested Solutions

Here are a few steps you can try to silence the startup sound:

1. Disable Fast Startup

Fast Startup can cause Windows to ignore certain boot-time settings.

Go to: Control Panel > Power Options > Choose what the power buttons do

Click "Change settings that are currently unavailable"

Uncheck "Turn on fast startup"

Save changes and restart your PC

Then try unchecking the startup sound again.

2. Use Group Policy Editor (for Pro editions)

If you're using Windows 11 Pro:

Press Win + R, type gpedit.msc, and press Enter

Navigate to: Computer Configuration > Administrative Templates > System > Logon

Double-click "Turn off Windows Startup sound"

Set it to Enabled, then click OK

Restart your PC to apply the change.

3. Registry Edit (Advanced)

If the above steps don’t work, you can try editing the registry:

Press Win + R, type regedit, and press Enter

Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\BootAnimation

• Create or modify a DWORD value named DisableStartupSound and set it to 1

Be cautious when editing the registry—back up your system first.

Let me know if you'd like help applying any of these steps or if the issue persists after trying them. I’d be happy to assist further.

Warm regards,

Quinnie Quoc.