Hey there.......In the first instance my computer always gave me an error message saying high temperature and it has to shut down and it would do that automatically after giving the error, an d then eventually it started shutting down and restarting continuously So I replaced the fan, but it didn't help so decided to also replace the power supply. but now the only thing it does it boots up and then prompts me to save the current setting before i even save them it shuts down. now it starts up for a few seconds but doesn't reach the point of prompting me for anything. What might be the problem?