I have no clue what's going on. I installed disk warrior and it neede to restart, so I did. Upon restart it shows the splash screen with the apple logo. Then, within 1 or 2 seconds, it shows a black rectangle with a power button and the following text: You need to restart your computer. Please hold down the Power button for several seconds or press the restart button. Anyone have any idea what could be going on? Where can I start to fix this problem?