hey! this is my first post here, i was hoping if anyone could help me solve my problem. I am using NEC DVD+RW ND-2100AD cd-rw/dvd-rw combo drive and whenever i insert a DVD, whether a blank DVD-R, a DVD-ROM or a DVD movie, it just won't notice there's a dvd in it. I have no problems playing VCDs or any CDs. I have PowerDVD 5 installed and when i use that to play a DVD it cant detect it as well. Is it a software or hardware problem?