There is a sound effect when type ctrl+num lock (1-9) what is that? and where i can deactivate

Hi zato1979‌,

Search for: Change system sounds > Sound Scheme: Select Windows Default. Then under Program Events find the sound you hear, highlight it, go to the Sounds drop menu and select none. 

Thanks for the reply but there is not in the system sounds it only hear when you push crtl+2 anyway thanks for your help i'm keep finding it that sound fx

Thanks