ALIENWARE m17X screen issue

This is the second time that i am requesting help.

the first post is here

http://en.community.dell.com/owners-club/alienware/f/3746/t/19471107.aspx#20205673.

After i send this laptop to the depot and they replaced the screen and motherboard, the display issue persists.

In addition, some times when the laptop starts it shows that "no speaker or audio devices plugged in" and the system mutes.

i tried all kinds of methods like pc diagnostics or bios etc, NONE works. All of the above appears randomly and i have had enough of this.

This does not look like a two grand laptop, but rather of extremely poor quality.

Thus i demand a replacement of this laptop and NO more repairs because it just won't do.