I was running WindowsXP Professional on my Compaq DeskproPIII 733 Mhz computer. A few days back the system was unable to start. I formatted the hard disk. And now I am trying to install the WindowsXP Professional. Installation stops with the following message: PFN_LIST_CORRUPT - STOP 0x0000004E. Can someone help how to install WindowsXP and solve this problem? Thanks a lot.