Hi, I had a similar problem about 4months ago. What I was experiencing was a complete system freeze at random times not just watching videos. The music in the background started to stutter and my screen completely froze even the mouse was unresponsive.
After a couple of seconds it just "unpaused" as if someone would have pressed the unpause button on a remote control.
I traced the problem back to Daemon tools and its Virutal Drive Drivers completely messing with the system.
If you problem is similar Id get into more details.
Also tell me how you found out it ws daemon tools fault. Maybe Daemon tools is not the problem in my case but maybe i will find something else that causes the freezing.