It doesn't work, sorry.
If I understand you correctly, you said:
Close all applications.
Unload jaws.
Launch tecno shock.
Start a new game from the main menu.
Once you are in the game environment and you want your character to sleep
press alt+tab.
Now load jaws and an application such as internet explorer.
Alt+tab doesn't work.
Regardless of pressing tab or alt+tab, I just hear a beeping sound and I
still hear the game's sounds.
In other words whether I press tab or alt+tab, I hear the same beeping
sound.
Then I loaded jaws and internet explorer, but the same thing happens.
My computer freezed.