Helpiing a friend. Macbook about 7yo playing 10.6.8 Friend daily watches a yoga class from yogaglo it has been just fine. Now after a short time it starts stammering then it freezes and crashes the whole computer. I watched just now and seomthing came up saying to FORCE POWER OFF and restart. My friends say it happens on other video forms like from stored torrents and Youtube.....however I just played Anthony Bourdain and it worked for 10 minutes. When i played the yoga class the Bourdain kinda started freezing. Just played Better call Saul it played 5 minutes then the video froze audio continued. I checked Flashplayer is up to date although I don't believe regular videos use it/ Any thoughts?