deactivation video and sound

[Newbe311]

I will be installing a 7750 video card into my 580s and have increased watt for power supply . My question is .......How to deactivate existing video and sound which is part of original mother board ( deactivate ) and then I can install new drivers for new card
Thanks all

 

[WyomingKnott]

You don't need to deactivate the onboard sound / video. Install the new card, install the drivers for it, shut down, and move your monitor to the new display. Well, that's the simplest possible case, anyway.