I have a lite-on sohw 822s burner and a samsung cd-rom drive. The two devics appepeard on MY COMPUTER AND DEVICE MANAGER but after i was forced to restart my computer because of ann error it doesnt show up anymore. I get no error message beause, my windows xp simply doesnt recognize the devices. I used to work perfectly. This devices are factory ship and i did not install them my self, so i dont knw what haappened. PLEASE HELP THANK YOU