Contrary to what the error message says, it may have nothing to do with hal.dll. Rather, it might simply be the BOOT.INI file on the root of the C: drive that is misconfigured for some reason(You can go ahead and install hal.dll and see). The following is steps to follow to resolve the problem: 1. Insert and boot from your WindowsXP CD. 2. At the first R=Repair option, press the R key 3. Press the number that corresponds to the correct location for the installation of Windows you want to repair. Typically this will be #1 4. Type bootcfg /list to show the current entries in the BOOT.INI file 5. Type bootcfg /rebuild to repair it 6. Take out the CD ROM and type exit