10.5.4 to 10.5.5 Upgrade Messed up Graphics

[Toxics]

Hello
My Rig

Hp Pavillion Dv6887 Special edition
Nvidia Geforce 8400 256 megs
3 gb ram
250 gb HD Western Digital
Intel T8100 Dual Core 2.10 Ghz
Intel ICH8
Realtek AL268 High def Sound

My Question is i had Kalyway 10.5.2, i Used Jas's Combo update to upgrade 10.5.3.
10.5.4 was easy just downloaded update from Apple's website and reboot.. worked flawlessly. Only thing that i have to do was restore all Extension which i had backed up using OsX86 tools utility.. but i followed Same procedure for 10.5.5( I used Netkas's Script procedure also) but after reboot its start but all i can see is Black and White squares.. cant see anything...
what should i do to install kext using install Dvd or usb in single user mode.. and my backup extension folder is on """ Leopard Harddrive """ Root folder... or do i need to download Nvinject Kext seperately to Usb???
please guide me here i am very greatful to you guys... looking forward for your answer....

Here is the screenshot of wht its look like
http://xs137.xs.to/xs137/09104/3332387766_f1c13eff5e_b771.jpg (http://xs.to)
:)

[Ali C.]

Can you boot in safe mode (-x at boot prompt)?
Restoring *all* extensions after an OS update is probably not a good idea. That being said, if you can boot in safe mode you should be able to reinstall your video driver so the display works right again, or at least beat around at your kexts until you get it working.