Here's what happens:
Once in a while, after a reboot, it will play one video for me just fine but no more. Normally, however, it does one of two things: either it shows a snowy display and tells me to try again later (which NEVER works) or it starts to load and about 1 cm of the video loads (red line on progress) but that's all and nothing else. If I position the cursor over the length of the progress line, I can see pictures of what the video would display at that point if it were playing but the main screen is always black. On the rare occasion, I will get sound but the screen is always black.