dvd won't read

[dani82]

i am trying to decrypt Love Hina Concert dvd, but it won't load (what do i mean by won't load, i mean like putting a blank cd-r into a regular cd-rom won't load), it would play on my friend's dvd player, but why won't it play on my dvd-rom, should i upgrade my dvd software (powerdvd4)?

this is the only time that this has ever happen.

[Sparkplug]

Try to use a CD lens cleaner. May be dirt lens of your DVD drive