I am trying to install Windows XP on my friends HP Pavilion 7840. When he brought this computer to me Windows ME was the operating system and was badly damaged and had many viruses on it. This computer comes preloaded with Windows ME and has recovery cds. To start with I removed the partitions made one new active partition and formated the drive to get rid of all the viruses. I then set the cd rom as the first boot device for the Windows XP installation. I put the Windows XP cd into the cd rom and restarted the computer to start the XP installation. The installation seems very, very slow to get started but does start installation until the point during the XP installation when the computer restarts and then the installation jams up. I often get hard drive errors but have tested the hard drive in a different computer and it is ok. I tried a new power supply and a new cd rom and I still get the same problems. Is it possible to Install XP on this system? I guess my next step should be to flash the bios? Any help would be greatly appreciated!