Just tried installing third new screen in my laptop. Bought the first 2 from Amazon and both were bad. Bought a third one and it gets a full display but the display is highly contrasted, way too bright to use. I also changed the LCD cable twice and the screen shows same results. The first two that I returned had correct brightness but where missing parts of display on sides of screen. This shows full screen but is far too bright. The laptop does not have a dedicated graphics card, Can the internal graphics on the mobo be bad? Is this screen defective too? I'm eady to throw it out the window as I have been playing with this for a month. Thanks