You may find some of the SPs in C:\SwSetup. Even if you try to download and then install an HP Driver that is already installed, HP is going to ask you if you want to replace that particular Driver. That means the driver is up to date so don't bother to replace it. But do not delete any drivers already installed. If there is a problem with a driver you'll receive a message asking you if the driver installed correctly. Just cancel that installation write down the number of the update then restart your machine, try to download and install it again by itself.