Possible causes:

(1) Outdated driver.

(2) Router problem.

(3) Incorrect system network settings.

Solutions:

(1) Try switching the flight mode once.

(2) Update the wireless network card driver.

(3) Reset network settings: Settings > Network and Internet > Network Reset.

(4) Try connecting to other Wi-Fi to determine if it is a computer issue.

If the above solutions still cannot solve the problem, please contact the after-sales team through the After-sales E-mail to proceed with the next after-sales policy.

Possible causes:

(1) Accidentally pressed the shortcut keys (usually Fn + F1-F12).

(2) Driver issue.

(3) Settings have been changed.

Solutions:

(1) Check if the touchpad switch (usually an icon of a touchpad) was accidentally pressed.

(2) Update the touchpad driver.

(3) Check the settings: Control Panel > Mouse > Device Settings.

(4) Restart the computer.

If the above solutions still do not resolve the issue, please contact the after-sales team via the After-sales E-mail to proceed with the next after-sales policy.

Possible causes:

(1) The backlight function is turned off.

(2) There is a problem with the driver.

(3) There is a hardware fault with the keyboard.

Solutions:

(1) Try the backlight shortcut key (usually Fn + space or there is a backlight icon on F1-F12).

(2) Check the backlight settings in the power management software.

(3) Update the keyboard driver.

(4) Restart the computer.

If the above solutions still cannot solve the problem, please contact the after-sales team through the After-sales E-mail to proceed with the next after-sales policy.

Possible causes:

(1) Bluetooth service is not enabled.

(2) Incorrect device pairing information.

(3) Signal interference.

Solutions:

(1) Check if the Bluetooth switch is turned on (physical switch or Fn shortcut key).

(2) Delete old pairing records and re-pair the device.

(3) Update Bluetooth driver.

(4) Move away from devices that may cause interference such as wireless routers, microwave ovens, etc.

If the above solutions still cannot solve the problem, please contact the after-sales team through the After-sales E-mail to proceed with the next after-sales policy.

Possible causes:

(1) Software conflict.

(2) Memory failure.

(3) System file damage.

Solutions:

(1) Record the blue screen error code (such as 0x0000001A).

(2) Enter safe mode to check for software conflicts.

(3) Run the memory diagnostic tool (Windows Memory Diagnostic).

(4) Use the system restore point to recover.

If the above problems occur, please contact the after-sales team through the After-sales E-mail to proceed with the next after-sales policy.

Possible causes:

(1) Incorrect startup device sequence.

(2) Hard drive failure. 

(3) Damaged system files.

Solutions:

(1) Enter BIOS to check the startup sequence and ensure the hard drive is set as the first boot item.

(2) Restart after unplugging external USB devices.

(3) Run hard drive detection tools (such as the diagnostic tools provided by the brand).

(4) Try system recovery or reinstall.

If the problem persists, please contact the after-sales team through the After-sales E-mail to proceed with the next after-sales policy.