my keyboard is working perfectly i can able to use ENter key,and all other keys in windows operating system!!!

4K (2160p) output is limited to 30Hz via both the Display Port and HDMI 1.4a outputs.

H.265/HEVC is software (CPU) decoded, so playback is limited to 1080p max and low/moderate bit-rates.

Windows 10 gives you a lot of options you can configure directly within the operating system, but on every computer, there are some settings you can only change in the BIOS (basic input / output system).

The BIOS is the software which is built into your computer's motherboard and controls everything from the boot order of your drives to preboot security options to whether the Fn key on your keyboard activates a function key or a media control.

I finished up last night and shut the computer down (Start Shut Down).

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Haswell Chromeboxes were first released in March 2014, and quickly became the low-cost x86 platform of choice due to the combination of the speed U-series Celeron CPU and capable integrated GPU.

Capability wise, the Haswell Chrome Boxes fully support hardware accelerated H.264/MPEG-2/VC-1 video playback at up to 2160p24/p30 (4K), proper 24p output, and full 7.1/HD audio bitstream output.

3D playback is supported (HSBS/HTAB), though the decoding of MVC streams (as used in 3D Blu-ray ISOs) is not supported under Linux at this time; the hardware itself is capable.