Power control prompt sound power control sound. If this feature is enabled, the computer will beep when it enters power management mode, resumes operation mode and connects or disconnects the AC power adapter.

You can choose LCD, CRT and both (that is, LCD and CRT). If it is set to LCD, the notebook computer will only output to its own LCD screen when it is started, and will not automatically monitor external display devices; If it is set to CRT, the system will automatically find the external display when it starts. Ordinary users are advised not to set this value.

Because it may lead to the failure of not displaying at startup: setting to Both will enable external CRT display while enabling its own LCD screen. This setting is recommended for most users.