Hello friends, I have the Gateway DX4822 Desktop computer system which come with the preloaded Windows 7 Home Premium 64 bit operating system. Now this computer system is not working properly. Its working very slow and sometime it reboots by itself. So i want to format the computer system and reload the Windows 7 operating system again on the system. I have the installation disc of Windows 7 operating system. Bu i am facing issue in formatting Gateway DX4822 Desktop.