With the "Wont turn on" issue ... I need to ask an obvious question and I dont mean to insult your intelligence, but ... Does the battery have any charge? Does it turn on if the Power supply is plugged in? Is the charging light coming on when the charger is plugged in and powered on?
Next, can you expand on what you mean when you say it wont turn on? Are there any fans on? does it make any noise at all?
Ok - simple stuff out of the way. Now assuming there is no sign of life at all, the battery is charged and you see the charging light try this strange sounding solution (and yes - I know it sounds mad)
Remove the charger.
Remove the battery.
Push the "On" button and keep it pressed for about 30 seconds with no power attached. Obviously it wont turn on, but bear with me.
Now replace the battery. Turn the machine on.