Hi! I just bought a Gateway CX2724 Laptop from BestBuy, the laptops was making a strange really annoying noise that is not the hard drive or the processor, so i went to best buy to exchange it for another CX2724, the same problem. When connected to A/C Power, the sound is less audible. There's a post -Click Here- where they say that disabling the USB root hub Power Management, in the device manager, under the Universal Serial Bus controller, in the Power Management Tab, you can disable the power managent, (and its supposed that the sound dissapears) but this is not possible, i cannot find that option. Can you share everything you know about this!