I purchased a HP ENVY 23 back in November just so that I could have the HDMI game mode feature. I have been to several sites and forums to find no answer on why this feature only works from time to time. If I want to switch from PC mode to game mode there is a physical button right under the HDMI port to press. If I press this button, after using the PC feature (surfing the web, reading PDF’s, etc), the button will not work. If I reboot the PC right into the Windows 8.1 desktop, then the button will work and I am able to switch back and forth. This appears to be a software/firmware issue, so any help from HP would be great.