and got as close as I could to the various fans. In my case it was an exhaust fan in the side panel.
I have an HP Pavilion p7-1108p desktop, running Windows 7 64-bit.
I've recently installed a GeForce GT 610 video card and an LG DVD optical drive, with all proper drivers in place. Since then, whenever the computer is on, a constant buzzing sound occurs. I believe the sounds are coming from one of the fans, but I'm not 100% sure if the fan in the power supply, the CPU fan, or the video card's fan is to blame.
I haven't found a way to adjust the fan speed of the video card fan through Windows, and I'm not certain of how to adjust fan speeds of the other two.
I gave the PC a thorough dusting with canned air prior to installing the card, and I made sure everything was tightly screwed in and connected. To my knowledge, there was nothing loose or brushing against one of the fans.
Any help is appreciated. Thank you.