My Dell studio 1555 display not working, even power on, I repaired same problem 2 times at Pune, but same problem arises after 4-5 month uses. Actually laptop was working after last service. My CD stuck in CD drive to remove that CD i dismentlled the lap top after CD removal I reassembled the laptop. But it beeped twice after that i reset ram & tried to start after that beep gone power butoon glows but no screen shows, then i tested with D button & display glow with several colors. same problem happen twice before & i repaired it. Pls help me what to Do.