Zoomed Desktop when laptop attached to 4k TV

Hi,

I have recently purchased a new 4k television and sometimes plug my laptop via an HDMI cable to it for gaming. When I connect, the desktop is zoomed in and some games do not run because of this.. Now I had this issue with a standard 1080p TV, it was a simple fix of adjusting the Change the size of text ,apps and other items slide bar under settings/system/display. Games would start working and thedesktop would resume its normal size. But with this 4k TV, the Change of size of text bar and not selectable along with a number of other options, like resolution (I have to do this via the Intel Graphics Control Panel. Some games do not like working whilst the desktop is set to zoom, any ideas what is going on?

Goto the settings for the port your pc is plugged into (on your tv) and set it to PC or 1:1 (your tv may have a dedicated hdmi input for a pc check your manual) this will give you 1:1 pixel mapping and a proper view