Toshiba labtop issue

Hello, My Toshiba labtop Satellite series shut down on me about 3 months ago and I just decided to see if it would work this morning bout 30 minutes ago and it still does the same thing it did when it first shut down on me. For like a week straight I tried to reboot, backup and recovory ect. nothing worked at all that was when it first happened and now that it is on it is still the same will come on but screen is blank. What can I do about this situation? Another thing it says when it comes on in the beggining that windows failed to start due to a recent hardware or software change that is what might be the cause of what happened to it. What is it specifically talking about I do not know much about computers but I am learning about htem now in school online class Intruction of Computer Literacy.