Hey guys, I'm new to the forum and am in need of your wisdom. Lately I have started to notice a annoying sound coming from my mbp 15 inch 2.3 GHz Intel Core i7. It is high frequency, electric sounding, quiet, continuous, and auscultating. It doesnt change if I move the computer around. You can hear it here: http://vocaroo.com/i/s0y9IQLMsvIM (the louder nonauscultating sound is probably from the processor?) Its origin is somewhere from the left part of the computer - It is certainly not comming from the HDD. Im guessing its from the mainboard, the processor maybe? The primary disk is a SSD and the Optical drive has been replaced with the original HDD in a caddy. Also the 2x 2 GB RAM has been replaced with 1x4GB RAM. Any ideas what is causing this sound? And what can be done about it? The computer is still covered by extended warranty.