Fresh Windows 10 Install, motherboard makes weird noise.

So, this is hard to describe and i will try to add a video later.

I will explain. So yesterday got a new SSD (860 EVO 500GB) and installed on it a fresh W10 copy on it.

So far, so good everything. But, in intervals of 5-10 minutes the motherboard gives a sound. That sound is the exactly one which does when the PC starts (before booting).

Note: The sound COMES from the motherboard, not from the SPEAKER connected on it.

Meanwhile i don't have any troubles with the sound, its starting to be annoying.
 
Solution
recheck all screws from the board to the screws post if there in all the way also could it be a loose fan on the case or cooler .