silixx
should i let it burn overnight aswell? altough i already used it some hours on load  not sure if its gonna work

Yes.

thanks

Does burning in actually work? I'd like to hear the OPs results. I also have coil whine on my GTX 1080 SC. I've returned one and got a new one and I still have the issue. I ran Heaven Valley for 8 hours and it didn't seem to do anything. I did find the following out:
 
- Coil whine happens at 99% load (using MSI Afterburner) regardless of frame rate
- When I turn my monitor off the coil whine stops
 
Things I may try:
 
- Use the EVGA overclocking tool rather than the MSI tool
- Switch power supplies (right now I have an EVGA P2 650W and I'm going to go buy an EVGA P2 850W to see if that makes a difference)
- Switch the power supply from ECO to normal mode

"burning in" did not work on my EVGA 780 ACX which sounded like in the OP video, even after one year of heavy use the coil was producing the same noise, i personally believe that burning in is a myth.
 
What is the science behind burning in anyways? the source of coil noises is that coils vibrate as they resist current, some coils vibrate more than others in certain conditions and so are noisier, i believe that every single high performance graphics board has this noise to some degree, by that i mean, if your put your ear very close to any PCB running a graphics chip you will hear that buzzing.
 
I never had a GPU that did not make this noise, even my PS4 is producing this noise and can be heard if you put your ear close to it while a game is running, other GPUs like in the OP video have this noise loud enough that it can be heard from a distance.
 
Did anyone actually had any GPU that did not produce this vibration noise when you put your ear very close to it? and did burn in actually work for anybody? and if so, why and how it works?

i tried to "burn" mine yesterday it did nothing,the coil whine is stil there