Sorry to hear your having problems with your Laptop.
First thing we can try is to see if you can use an external monitor.
Use the (Blue) VGA connector on the side of your laptop and a VGA cable to connect it to the monitor. See Below.
Once you have your laptop connected to the external monitor, turn it on and see if it comes up on the external monitor.
If it doesn't, you might have to hold down the Function Key and press F8.
This will cycle between the laptop monitor and the external monitor.
If that works, it might be the laptop screen has probably gone bad.
If nothing still comes up on either screen, it's probably time to get a new Video Card or Motherboard.
If you still have questions, please send me a message and I'll see what i can do to help you further.
Hope this helps!
Please don't forget to rate:)