My DVD-rom don`t read same disk.

Support Information:
Device Type: CD / DVD
Manufacturer: NEC
Model: nd-3550a
Interface: IDE
Operating System: Windows XP Professional
Age of Device: < 1 year old
FCCID:

Type of drive: dvd-r/cd-rw (dvd burner, dvd reader, &amp; cd burner combo)
Location: internal
What recording software are you using?: Nero/version

Find it on DriverGuide (http://members.driverguide.com/index.php?action=srch&sm=b&aax=&qa6=716&qa5=3&qa7=1500&dp=1&qm0=nd-3550a&jmd=and&fzz=d) | Find it with Google (http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=NEC+CD+%2F+DVD++nd-3550a+Windows+XP+Professional+) | Research manufacturer NEC (http://members.driverguide.com/index.php?action=getinfo&companyid=716)

Don't understand your term. Do you mean it won't read dvd disks that are burned in it or it won't read any dvd disks?

Compatible dvd decoding software is required in order to read dvd disks. What software/version do you have running?