Bottom third of screen goes grey. Seems connected to door tilt.

This problem exists both in Windows 7 as well as during the laptop's setup program (when I hit F2 at boot up).

If I slightly tilt the script up or down, the bottom third of the screen goes grey. The grey disappears as long as (1) I maintain a certain angle and (2) and don't try moving the tilt of the screen. If the grey ever appears, I have to play around with the angle of the screen (scratching head).

I followed this you tube video (http://www.youtube.com/watch?v=9P_6fw-Vu...) to tighten the screen. Although I succeeded in tightened the hinge, I am still encountering the problem. Note: I was unable to tighten the lower hinge screws (I was only able to tighten the top hinge screws located behind the screen bezel).

Any suggestions would be appreciated.

Cheers!

Mark