pioneer 105 problems booting dvd-r

[there is light]

Thanks for the reply,
I just tried the DVD-R Movie in my PS2 and it worked perfect first time on unbranded, so I guess it is not a laser prob.
What I cannot understand is why the tray won't go in on its own when booting, that has got to be the problem.
Any body had this prob before ? ... any strange boot up methods that have worked with this NEO 2.2 chip. Somebody must know.
Is it me or is it Memorex.