RE: DVD won't play, digital copy protection issues.
Believe it or not, try installing an updated Graphics Card driver.
Sounds weird, but solves 99% of these issues...
> I can't play any DVDs on my Gateway GT5404. It displays the following
> message: "problem with digital copy protection between DVD drive, decoder
> and video card. Try installing updated driver on video card." I am running
> Vista Home Premium.
> I have all available Windows updates. The driver is a ATAPI DVD WDH16W1P
> ATA device. Version 6.0 6000 16386. Please help.. It used to work. I have
> had the computer for three months.