Do you have an external monitor you could use to check?
You might try booting to some other media so the Windows install is not involved.
Usually, as you probably know, Safe Mode will just start the basic drivers for the system. If it is having problems there, it might be the actual device having the problem.
From the way you describe the problem, watching the video might have caused some damage which is showing up in the restart. Hopefully these suggestions will help sort it out.
To access your recovery options, check the owner's manual. It is probably some key combination that has to be entered while being powered on, or shortly after.