Latitude D630 LCD won`t turn on!

​Hi,​

​ ​

​I`m having a Latitude D630 for about 10 months.(Spec. : 2.2GHz Intel T3700, 2GB RAM, nVidia Quardo NVS 135)​

​My default OS was Vista Business but I removed Vista and Installed XP SP2 from the first.​

​and also I installed ubuntu 8.03.​

​I installed a game named Sniper Art of Victory, 5 days ago. when i started the game and loading of level 1 finished, suddenly my Display Colors confused. after a while, Blue Screen Error for Win XP appeared and laptop was restarted. my lcd was turned on, but doesn`t show anything. i turned off laptop by holding power button.​

​i turned it on again and re-installed Win XP. but after one day, the problem occured again.​

​but now, even if i turn off and turn on laptop for several times, my lcd won`t show anything more.​

​i mean the backlight of lcd is on and lcd is not dark black as when is off, but lcd don`t show anything.​

​can i fix the problem myself or it requires experts to solve it?​

​ ​

​thanks for your attention​