Hi All, I just want to know/ask how come I can read/install my Windows 7 RC from my Dell Latitude E6400 whilst on my Compaq Presario V3532TU won't? Here's the scenario, I dual boot my Dell with XP and W7. then I've decided to reformat my Compaq Presario V3532TU but when I insert my DVD from its DVD bay, it didn't even read it! it's like the DVD is blank or something! so I tried to take out the DVD (W7 installer) from my Compaq and put it in to my DELL suprisingly it read and it even autorun and when I click install it does INSTALL! my two laptop has DVD dual layer drive, i'm a bit confuse. Any help or thoughts about kindly please post. Million thanks!