My PHILIPS DVD+-RW DVD8801 cannot read any types of cd. Whenever i insert a cd, it reads it as a blank cd even if it's not but when i try to burn something it says that the cd is blank. Can this be caused by a dirty lens? Or is my drive already crashed. I checked the device manager and it says that there is nothing wrong with the drive. I have a dell dimension e310 desktop with windows xp.