[SOLVED] No sound after replacing thermals

[Adam65]

So i was changing my processor's thermal paste. First i removed my GPU, then reapplied the paste, everything went well. PC opens normal but no sound?
I reinstalled the drivers but nothing. What went wrong? The headset works, tested on my phone
specs:
GTX 980
I5 4670K
16gb ram
600w psu
240gb ssd
250gb hdd
Z87-A asus motherboard

 

[Adam65]

Fixed it, windows downloaded a bad driver called realtek, uninstalled that and it worked