New build, no audio MSI z87-g45

Specs:
Intel 4670k
MSI z87-g45
Gigabyte GTX 770 OC
Samsung EVO 840 SSD
Seagate 1TB barracuda
Corsair h100i
EVGA 750w semi modular PSU
Cooler Master Storm Troopper Case
Crucial Ballistix XT 8GB RAM
Windows 7 Ultimate x64

Problem:
All drivers installed ...