Install the latest driver for compaq presario cq40 notebook pc
Download the latest and official version of drivers for Compaq Presario CQ40-125AX Notebook PC. This driver package is available for 32 and 64 bit PCs. It is compatible with the following operating Systems: Windows 7 (32-bit), Windows 7 (64-bit), Windows Vista (32-bit), Windows Vista (64-bit). Don't worry if you don't know what's your operating system. HP website will automatically detect your device and select the best installer for your OS.