Sony (DRU720A) DVD±RW Dual Layer Burner "show movies half" Questions

Half-way burn? We have two Sony DVD RW 720A(s). We have had absolutely no problem burning movies for the past 2 years. As of late, we have had multiple problems burning movies. I can't even recall the

...half installation process it shows some files are corrupt and in case of movies, the movies do not run at all, here again it shows that some files are corrupt). However, my pc is virus free( i've ...

...half installation process it shows some files are corrupt and in case of movies, the movies do not run at all, here again it shows that some files are corrupt). However, my pc is virus free( i've ...