PC makes Buzz sounds every now and then

[19Cristian89]

I've just built a Ryzen pc and everything went fine, except for a little problem. When opening a new browser window or having a huge battle scene in LoL the pc makes weird Buzz sounds 1-2 seconds and then it's gone. Happens more then once a day. PC doesn't turn off, screen doesn't freeze, nothing happens. Just the weird sounds.
Anybody know what it could be?

System:
Thermaltake core p3
msi tomahawk b350 board
Thermaltake 700w psu
Ryzen 5 1600x stock
strix Gtx 960 4gb
16 GB ddr4 Corsair rgb Ram 3000 mhz
cooler master Master liquid 240 waku
2TB hdd
240 GB samsung M.2 SSD

[Nevada']

Could be your Fans. Maybe they start Spinning when you Start a process. You can avoid this by setting your lowest fanspeed a Bit higher

mfg