Gateway 450SX4 Notebook "monitor switched showing self test" Questions

monitor wouldn't turn on and I cuoldn't take out my game disc. After a while, I tried turning it on again, and it worked so I thought it was just overheated or something, but after a couple of minutes

...Self-Monitoring, Analysis and Reporting Technology of the disk drives). This can happen if the laptop has experienced shock, especially when switched on, but very often the disk drives are simply ...