Surface Pro 4, annoying noise from the back!

The two SP4 m3 in my household do present this "singing crickets" noise...

I've found a work around of sorts for these hungry singing crickets that are infesting our computers.  You need to feed the crickets a steady diet of roughly 20% CPU usage.  For example, I've been using this wxMaxima script that generates random numbers forever:

k: 1$ while k > 0 do( k: random(100) + 1 );

The crickets will stop singing as long as they have a steady diet of numbers to crunch on.  Of course they will get a little warm and munch on your battery as well...

Thanks for the tip.

I prefer the singing crickets rather than a warm device and short battery life ;)

There's a long discussion about this topic already.

I suggest you have a read there.

I think it would be helpful if the Forum Moderator split this thread into two threads since we are all talking about two different problems:

1. Noise based on CPU usage: Singing Cricket Problem
2. Noise based on brightness setting: Whining Tinnitus Mosquito Problem

Mine has an electrical noise on the upper left side of the SP4 screen and usually happens when the power is plugged in and fan is running. Touching the screen or writing with pen using slight pressure causes the noise to sound like a electrical metal grinder, how loud it will be depends on how much pressure was applied on the screen. 

I suspect this is due to the fan and the screen being so close to each other or I don't know.

What is strange is that I've owned the SP4 for 3 months now and I only noticed this noise last week!