Do as in Google. It is said that RAM or video. Then alternately pull straps operatives and see if there is no error here the desired level, which should be changed. With video easier, changed to another - if there is no error then the problem is in the video.
The iron will have to climb, not hard drives, so damage will be difficult.
P. S. the radius of the problem right proporcionalne krivizne hands created. What I mean is that, if there is any doubt in STS.