HD4000, full HD and hdmi

[RPass]

Hi to all and happy new year,

I have a problem with my HD Graphics 4000,

When I connect my Samsung tv 32" through an hdmi cable something strange happens.

The Info box on TV, shows 1920x1080 at 60Hz, but the real resolution is 1280x720.

The only way to get the full resolution on tv is use "collapse" inside multi screen section.

With this option I get a unique monitor of 3840x1080px.

This is my pc specs.

CPU: intel 3rd gen. i3 3225

RAM: corsair 8 gb

M/B: Asus P8H77I

Main HDD: Samsung SSD 128gb

OS: Windows 8.1 64bit

Driver: 10.18.10.3379 18/12/2013

As you can see the tv info shows 1920 but the real resolution is 1280

My other monitor (a 22" Dell) connected through DVI works well at 1080p.

Thank you in advance