Downloaded a movie although can only get to about halfway before it goes into black screen.

Question

I recently rented the movie American Pie. I continued watching, but near the halfway point, the video went into black screen, like it didn't download the movie properly. So I thought maybe the rent expired or something. I downloaded the full version of American Pie, and the same thing happened around halfway. I reported this to Itunes but they didn't give me any advice on what to do or how to fix this. Can anyone help? Thanks in advance.

Answer 1

Start with a couple of simple things. Before trying either, unplug any USB or Firewire devices. Leaving only the keyboard and mouse connected.
1) Start, or restart the Mac and immediately hold down the CommandOption+PR keys to zap the PRAM. Keep holding the keys for four startup chimes. Release the keys and see if it will boot. If not, go on to step two.
2) Resetting the Mac from Open Firmware.
Restart the Mac and immediately hold down the CommandOption+OF keys. This will boot you into open firmware. When it stops, you will be looking at a ">" prompt. At the prompt, type each of the next three lines, followed by pressing the Return key. Type each line exactly as show (without the (press Return) part), no capital letters or spaces.
reset-nvram (press Return)
set-defaults (press Return)
reset-all (press Return)
The Mac should restart after pressing Return on the third command.
Let us know what happened.