Hello 常夜 御
Thanks for raising your concerns in Microsoft Community.
Based on queries and testing, the current LocalUserSyncDataAvailable is running a task that applies to Windows sync, and this sync exists with OneDrive and the online storage sync for Microsoft accounts on the system. If you have OneDrive on your PC or are logged into a Microsoft account, such sync tasks may run, but not frequently.
In general, these tasks do not usually cause the "emits windows hardware deletion sound effects" problem you describe, but if your device is experiencing anomalies with the condition you describe, it may be due to other reasons, such as interference from anti-virus software or third-party software.
We may then need to look at other dimensions of how the problem is occurring. The first thing you can try is to record a video of the problem occurring, and share it with me, which will help us to get more details to look at.
Alternatively, you could try booting the computer to a clean state and see how the problem occurs. A clean boot invokes just a basic set of Windows services, which can help you troubleshoot if other third-party software is interfering.
How to perform a clean boot in Windows - Microsoft Support
Disclaimer: A “clean boot” starts Windows with a minimal set of drivers and startup programs. It helps to determine whether a background program is interfering with your game or program and to isolate the cause of a problem.
These steps of "clean boot" might look complicated at first glance. However, to avoid any trouble for you, please follow them in order and step-by step so that it will help you get you back on track.
Feel free to post back if any updates.
Best regards,
Chandy |Microsoft Community Support Specialist