Liteon in XP

You could try this.
Download the latest firmware from Liteon (R48VS08)
Instal it in Win XP and after it has updated the firmware and asks to reboot say okay and when it boots up, at the correct time press F8 to boot in SAFE mode.
Let it start up in SAFE mode and when it has finished loading restart again and let it boot normally.
I had a similar problem as yours and this fixed it.
It installs the drivers properly in safe mode.

I assume your reply belongs to Help! Lite-On LTR-48125W won’t work in XP!