I am using windows xp in my computer system. A few days back I was able to easily read and burn DVD from my DVD RW. But recently i was trying to write a DVD but I found that my drive cannot read or write any form of DVD. Not only the ones I burnt but even other DVD as well. The power of the DVD RW works fine and even the tray comes out and goes in. I have even checked in bios as well and itís detecting fine there. So the only problem is that whenever I insert a DVd it acts like there is no DVD inside.