my dvd writer writes dvd successfully but then refuses to read the same DVD saying 'windows cannot read from disk. the disk might be corrupted or may be using the format not compatible with windows'. i use windows XP media centre on DELL Inspiron 6000 and it came with dvd writer software from sonic digital media LE. as i understand, there are two possibilities left, the dvds are spoilt because of hardware of software problems. how do i determine which and how to improve the situation. plz help me. thanks in advance.