Ati Mobility x600 deadlock

Hi everybody,
I have a serious bug with my Ati Mobility x600 and my HP Pavilion zd8019ea.The display adapter went into some strange deadlock.I found on the net that this is famous HP bug with Pavilion series and Ati mobility cards.I tried to contact several times with HP central support but the operators are some girls who play a game for months and ask me to look for local support something like that and do not like to move the issue to higher thechincal level.Anyway I tried to install all new drivers supported by Hp & Ati as well as fresh OS without any result.Actualy I have some display graphic until Windows flash logo afterthat the computer goes into black screen.At the moment I'v disabled the display adapter in the Device Manager so I run under software emulation and have display at 1024x768 but I can not use serious apps in this mode.
I'm shure that this card Bios bug needs HP firmware support but they did not take any attention about.
Here's what I found about this bug:
http://www.dholm.com/2006/09/04/at [...] e-hp-mess/
Thanks in advance for any support!