Retrobat wont start

Hi my name is Matias and i got a fresh install of retrobat v6 and it wont start in full screen. in windowed mode it starts and appear to work perfectly but the games also plays windowed and i need full screen.
Ive installed all the prerequisites
when it is opened in windowed mode it cant show the videostart but the app starts.
When it is opened in full screen, the screen flashes once for the video to start, but nothing opens, then flashes again to start the app, but nothing happens and stays there, i dont know what to try

Hello
Can you try to check while opening BatGui.exe, at the root of your installation, if fullscreen is ticked there ?

I changed the setting of windowed/full from the Batgui.exe, to make it start i have to uncheck the full screen box.
But if i try to force full screen on any game it wont start, everything only works on windowed

Then it means that your computer cannot play apps in fullscreen ...
You surely want to update your gpu drivers

everything is up to date, i have a 6650xt.
i can play in full screen now, in BatGui.exe i have the force full screen box marked. even though the emulationstation opens in windowed, then the games do show in full screen. not optimal, but usable

ps sorry for my bad english