As the title says my Lenovo z565 Windows 7 laptop seems to power on (lights work) but the screen stays black. I do not get a windows logo or any cursor. I also notice when I plug in or unplug the power cord the computer beeps which it did not do before. I also tried hooking the laptop into another output device I know works but I still get nothing on the screen. Any help on this topic would be great! Thanks!