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It can be seen through the device's label/sticker or its original packaging and does usually have a format of 8********R as an example. You may directly press the touchpad hotkey or use a combination of FN + touchpad hotkey to see if it's enabled/disabled.Īlso, please share here your Yoga C640's MTM (machine type-model) number for us to check its specifications. Make sure that it is OFF first before pressing.Īs for the touchpad, check first if the touchpad itself is disabled by pressing the touchpad hotkey on your keyboard in order to enable it. You may also access BIOS Setup by pressing the Novo button hole that's located underneath the device. Please try loading the BIOS Settings into default by pressing F9 or FN + F9 then highlight/select YES followed by F10 or FN + F10 then highlight/select on YES again to save the changes & exit. Thanks for posting here at the Community Forums! In addition, the touch pad is also not working (while an external mouse does work).

Thanks a lot, unfortunatelly Wireless LAN is enabled in the Bios, but still not visible in Network Connections.

Lenovo yoga mouse disappears