YOGA 11S/13 Upgrade Windows 8.1 flat mode card

Knowledge Point Analysis:

After upgrading the Windows 8.1 system, the flat mode operation is very jammed.

Operation Steps:

Shut down the state, point on the left side of the key button recessed small buttons (you can find a pen to point).

Select the BIOS setup option and click Enter;

After entering the BIOS Select configuration option, point DPTF, the default is enabled option, click Enter, switch to Disabled can, and then fn+f10 save exit.

Cause Analysis: DPTF is an Intel dynamic energy-saving technology, Lenovo Yoga13 and yoga11s have this function, the BIOS has a switch design, when opened, the computer in the flat mode, tent mode, standing mode three modes can be realized energy saving.