Desktop poping in games videos and softs

[fansor]

in the last couple of weeks i have a big enoing problem with my win 7 what untill then worked perfect...
in evry action that occur on the win 7 on full screen aftar a short amount of time (in games videos an softs) the desktop sudennly popup in the middele of my actions jusk like if i will press the desktop buttom on the desktop this problem is very frustrating i tried every thing and you hope you can help me before i will format the system

 

[number13]

do you have another keyboard you can try