sometimes a hd movie will play for 1 minute then blank black screen. trying another hd movie only results with a blackscreen. the play, forward, back symbols don't respond and there are no messages of any kind. non hd movies seem to play ok.
thought has sent this- 10.8.5
hello Ashik. followed your instructions and no appreciable difference. after restarting having followed the keys, disk repair, and HD720 routines, the HD video runs for around 30 sec and then cuts out. trying another hd video, nothing other than the black screen appears. if i reboot and try hd video again it does the 30 secs only bit again. did your instructions 3 times and still the same. non hd movies work ok. HD video still the problem.