The Asus B53F is a dual-boot notebook with two on/off switches to prove it. Press the one to the top right of the keyboard and you boot into Windows. The second, top left, button boots you into Express Gate Cloud. Asus says this alternative OS boots quickly — and it does, in about 14 seconds. Impressive, even if it's more than the 10 seconds Asus claims. Windows, by contrast, took a full 69 seconds to boot.