Hello my name is ***** ***** certified computer professional with over 10 years experience. I will be happy to help you.
I am sorry to hear you are having trouble.
There could be a range of issues at work here. Lets start with the simplest one and work our way up.
First please turn off the computer and remove the battery and the power adapter.
Once it is completely off press and hold the power button for 30 seconds.
Leave the computer sitting for about 15 minutes with the power adapter and battery out and every 5 minutes or so hold in the power button for for 30 seconds or so.
Once 15 minutes has passed plug in the adapter but leave the battery out and press and hold the power button for 10 seconds.
If the computer now boots it just needed a hard reset and you should be OK. If it still does not boot please click reply to expert to let me know.