I installed Windows 7 and then tried to install Windows XP. However whenever I'm trying to boot from a USB disk to install XP it says
hal.dll is missing from my computer.
I have to restart the PC and am unable to install XP after having installed 7. My laptop's DVD writer is not working so I always boot from USB to install an OS.
I tried to delete all partitions and then reboot from the XP USB disk to install, but it says-
Windows could not start because of a computer disk hardware configuration problem.
Could not read from the selected boot disk. Check Boot path and disk hardware.
Please check the windows documentation about hardware disk configuration and your hardware reference manuals for additional information.
How can I fix this problem?