Laptop powers up but a blank screen shows with two green lights showing up top whats the problem

PLug the laptop into an external monitor to see if you get video to the external screen.  You should have a vga port on your laptop, connect it to the laptop and then turn it on.  If you see video the onboard video card on the laptop is fine and most likely you have a bad lcd.  On the other hand if by "powers up and then goes to a blank screen" you mean its posting you see the asus splash screen and instaed of going into windows you see a blank screen.  in that case you mos likely have a bad hard drive or corrupt operating system.  You can test the hard drive by downloading dft and booting from that cd.  here is a link to dft http://www.hitachigst.com/support/downloads/#DFT