laghaterohan 0 Junior Poster

I have compaq laptop..i have installed windows vista on it.
Off lately i have noticed a strange behaviour of my laptop. When i start my Laptop the dvd writer light blinks and at that time if i click on the open button the drive cums out n i am able to load dvd ..
however, if am late in doing that....n when the laptop is completely started ie..when Desktop Screen appears my dvd writer stops to function! When i click on open button my dvd drive does not open nor light blinks..!!! if i have a dvd alread loaded...its reads Not Responding....!

What is the problem ?? is it a major one ?? plz do let me know soon....

cya
Rohan