the last few times i turned on my computer in the morning it immediately shuts down, BUT, it will start normally after i wait an hour or 2 and just keep trying. sometines i can push the start button 10 times and it will start 10 times for 1 second and other times i get no response after the initial 1 second start. a led for the cat 5 input on the back of the computer stays lit when i go through this process. even though there is no response from the computer. any thoughts??