It is possible the laptop appears to be dead because the AC adapter is bad (and the battery is discharged).If you know that the AC adapter is working properly and it outputs correct voltage but the laptop is still dead, most likely you have a power issue on the motherboard (or power board on some laptops) and it has to be replaced.We suggest you run this free system scan drivers tool first for detect outdated and incompatible drivers on your computer system.Driver Assist can save you time and remove any guesswork related to researching driver issues by providing instant access to the most relevant content for your computer's hardware, solution article, even some of the old device which not supported/provided by the device manufacturer's website again.
It is also possible that after tapping on the LCD lid close switch the backlight works fine, you see a normal video on the screen for some time and then the backlight turns itself off again. Try to reseat cables on both end of the FL inverter to make a better contact between the cables and the FL inverter board.If it doesn’t help I would try to replace the FL inverter board.Most likely it is just a bad connection between the LCD display and the system board.If your laptop does not start at all or it starts but will not boot properly, it’s possible that you can fix the laptop at home without taking it to a repair center. I’m not sure if I can cover all situation at once, so I will update this post as more examples come into my mind. First of all in this situation check the AC adapter. If you cannot do that, find a known good AC adapter and use it for testing the laptop. You plug the AC adapter but the LEDs (power light, hard drive light, battery charge light, etc…) do not light up and the laptop will not react at all if you press on the power button.Driver Assist earns top marks for quality, support, and usefulness. With its huge database and grows every day - Driver Assist guarantees that it will identify your devices correctly 100% of the time.