When you re-installed XP, did you install the motherboard drivers.
If you do not have the CD that comes with your motherboard, go to the makers
website and download them.
That may get things going again.
>I have had a problem with my internal and external they will play cd-roms
>and
[quoted text clipped - 3 lines]
> combo cd-rom and dvd player. I had a system crash and lost evereything and
> when I reinstalled everything these two nolonger will work properly.