HP's pop-up window stated that my DV6663US (Vista Ultimate 64) laptop needed a bios update. I foolishly believed them, followed the instructions and installed the update, which destroyed the laptop. The laptop was working, but now nothing works and HP says they aren't responsible because it is out of warranty, but for the price of a new laptop, they will install a new motherboard. WARNING: Do NOT take HP's statements at face value. HP may have needed to destroy my laptop in order to inspire me to buy a new laptop, but it won't be an HP.