Whenever I put a DVD in the drive and click on it to run it WMP says

 

Windows Media Player cannot play DVD video. You might need to adjust your Windows display settings. Open display settings in Control Panel, and then try lowering your screen resolution and color quality settings.

 

Well, lowering it to 16 bit 800x600 and 256 colours (the lowest possible) does nothing, you still get the same error.

 

Microsoft Web Help advises updating the video driver, an Intel one, so I did, from Dells site.  Still the same.

 

Others symptoms (although not necessarily related)

 

* Cant Autoplay/run anything CD, DVD, Data, Photos, Apps

 

 I can play a DVD in any number of other apps so its not the codecs

 

I have another (not Dell) laptop with identical software that just plays a DVD in WMP when you stick it in, why cant the Dell do this?

 

System 

 

Dell Inspiron 1520

1Gb Ram

Vista Home Basic