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I have one and I have the same problem sometimes. Upon start up you see and hear everything start up but nothing on the display. When this happens on mine I shut it back down, and after re-starting it I press CTRL- ALT- DEL (warm boot). I don't know why it works but on mine it does. I've tried updating the bios, different memory, etc... it's something in the motherboard.
video out shows your video section is ok. Invertor board if new and bulbs/leds if ok then about the only things left are the cable or the lcd panel itself. The video connectors can come loose either in the lid or on the hinge connector. You can also have a problem with the data connectors inside the lcd panel. If the laptop had a good bump just the wrong way the contacts will slide or move just enough to kill the display. If you have the time you can slide it back and forth until it works.It is a royal pain as you have to disassemble it adjust then put it back together, test and hope it works or do it all over again.
If you use a flashlight on the screen to check for an miage get close and at an angle near the edges. Just as a definite rule out the backlight system. If you see anything then it could still be due to a bad invertor board (went thorugh a couple once before it behaved)
Thats about all I can think off right now. I would think it is just one of the connectors come loose on assembly. (been dere done dat ;-])
This is either an issue with your LCD video cable or your LCD screen 99% of the time. The best way to test this is to hookup to 2nd monitor and see how the image looks. If there are no defects then it is an LCD or cable issue. If you have graphic issues on the 2nd monitor then it is your motherboard.
I would recommend (assuming it is the cable/LCD) reseat the LCD video cable inside the laptop and then try to wiggle it around to see if you can make the lines get better or worse. Assuming playing with the cable does not effect the problems on your LCD Then I would say you need a new screen.
REMOVE ALL POWER FROM THE COMPUTER BEFORE YOU ATTEMPT Try this first remove the control plastic panel above the key board,reseat the lcd cable to the motherboard.If no go you may have a loose or bad inverter.Here is how to fix this,REMOVE THE BATTERY,AC CORD.On the front of the display you will see some little rubber covers these cover the screws revove the make sure you put them out of the way,remove the screws remove the bazel.Below the LCD is a little card about six inches called a inverter make sure its snug(CHECK THE WIRE PLUGED INTO IT FROM THE LCD),since you got this apart you might want to look at the rear of the lcd the back panel comes off too but you will have to remove screws as well.THAT CABLE SHOULD BE SNUG AS WELL YOU CAN USE A PIECE OF TAPE TO KEEP IT SECURE.Now thats it for the physical display.Put everything back together and try again.
Connect an external monitor to the laptop and see if it also has the vertical lines. If the external monitor looks fine, then your laptop’s LCD display panel is bad. If the monitor has the vertical lines displayed on it, then your graphics card or motherboard is bad. Your responses are intended to improve the level of service provided. Please show your appreciation by rating your experience. Thank You.
yes it can, plug a external monitor in the video port if you get video the rest of you computer is good the problem is the display.Now you might want to speak to a pro for repairs as it could be simply unplugging the conector from the motherboard or replacing the inverter.Last but not least you can try this for yourself remove the power battery and memory,press and hold the power button for twenty seconds.Reinstall them again and try again.
that is bad news. tis usualy hardware. its either the data cable is missconected on motherboard.. or the feared part .. up top on back of lcd is a very very delicate ribbon cable and board it gets squeezed too hard and contacts come loose. time for a new lcd.