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While using the Windows 10 Pro operating system, a ‘-‘ character appears every 5 minutes even if there is no keyboard connected and all keyboard device drivers have been removed. However, the device manager shows two “HID Keyboard Device” devices enabled, both with the Microsoft-issued driver version 10.0.16299.15 for the Filco Majestouch 2 keyboard.

This issue occurs regardless of the application being used but is most noticeable when typing or playing a game that uses the ‘-‘ key. The problem persists after restarting and seems to be unrelated to any user activity.

However, when using Ubuntu 18, this issue does not occur.

The user has used UIForETW to track keypresses after booting the system with no keyboard connected and opening a Notepad window.

The relevant text from this trace:

ThreadId, Virtual key code (Field 1), Key name (Field 2), Time (s)

6452, 144, < unknown key>, 233.788931940

6452, 189, -, 233.801680235

6452, 144, < unknown key>, 233.803025330

6452, 144, < unknown key>, 534.803823074

6452, 189, -, 534.805705281

6452, 144, < unknown key>, 534.807160578

2 ‘-‘ characters were inserted, 301 seconds apart.

Askify Moderator Edited question May 1, 2023