Wifes Asus TravelMate 5510 Boot Problem(s)

Hello,

She's had the laptop for about 2 year's, as far as I know. Lately since the girl's have been using it it has been dropped by the looks of it, but it still worked fine afterwards. The Symptom's are, On boot-up, the screen stays black. The HDD light stays lit (when normally it flickers on boot-up), so I checked the HDD by connecting it to another computer, No problem's, Boot-up on the other computer was fine. It booted up into windows with no error's or bug report's. I've gone all threw the motherboard checking for crack's scratches or nick's to see if that could be the case, but found nothing. I was thinking that maybe it could be a short in the wire connected from the motherboard to the laptop's screen, but if it was that wouldn't cause the HDD light to stay on. I've checked the wiring to the screen and found nothing. I've checked the processor. No sign of burns or harsh ware on the processor, no sign of broken pin's or any other that I have seen. Checked the graphics card "integrated chip", nothing looks bad just a little dust, but everything got cleaned. As far as I know, a faulty HDD would cause the HDD LED to stay on when it should flicker to show processing of the data, but couldn't find any result's. I've gone threw just about everything that I could think of, including checking the RAM chip's, but they are the originals that were placed from the manufacturer. So my head's full on this one, lol.


Any thought's on this issue would be much appreciated, Thank you