i need the softwarefor windowsxp home edition for my compaq presario 6400...i attempted to restore ...i accendentley use my compaq labtop disc..and it never worked again i need to restore or recover...i need help

Huh?

If you can boot into Windows Try using system restore. You can also hit F8 key when Stsrting up computer and select boot into last known good configuration. Nobody is going to give you a Windows Home XP O/S.

did you try Windows XP's System Restore feature?