Whine

Hello to everyone! This is my first topic on this forum, and I expect you can help me with this annoying problem that has been disturbing me for some days. Recently, I bought an ASUS R510V laptop with freeDOS as OS, 8 GB RAM, intel i7 6700HQ, GTX 950M as dedicated GPU, and intel HD graphics...

So I've had my Sony Vaio VGN-FW235D for about 6 years now and it's served me well, and still works fine except for this one little thing, it makes a loud whiny noise all the time when it's turned on. I've read articles about how it could have to do with the hard drive or fan but I'm not sure...

When I play Battlefield 3, my new headset http:// produces a constant low pitched whine that changes when I look at different surfaces. This sound is very annoying and I do not encounter it anywhere else. What should I do? edit: When I mute the headset, I still hear this sound?