full screen doesnt work

Mac, or PC?

@djgarret > Do you possibly have the split-screen mode enabled?

thanks for the answer , split screen mode is disabled , another pc work fine

It could be that you have a different video configuration on that computer; have you checked that the video drivers are up to date and you don't have a second monitor / display enabled?

pc

Uhm...?

drivers up to date and only one monitor enabled , still have the problem

What is the video chipset and driver version?

https://www.youtube.com/watch?t=7&v=fFLAkUL7u5I

Did you update the driver not via windows update but directly access to the driver provider?
Simply because windows update does not provide newest driver.

To get newest one, access:
http://www.intel.com/p/en_US/support/detect

https://www.youtube.com/watch?v=hhTuw35U-d8&feature=youtu.be

@djgarret > Not all HP Envy models have Intel graphics chipsets; please check if you are running an AMD at this site: http://support.amd.com/en-us/download/auto-detect-tool

https://youtu.be/3Bf6wPGvRPc

https://www.youtube.com/watch?v=RmeGyNOJ_FM&feature=youtu.be

Hi, full screen 4.0.1 version work great !!! problem solved