Update on this.
I have been corresponding with Kastigeer. We both have tried this
alternative solution (which will be posted below) and confirmed that Vista
works fine with full driver acceleration support.
Please visit
http://www.geekzone.co.nz/forums.asp?ForumId=45&TopicId=8236 to
see my posts in regards to this issue.
And the solution that Kastigeer discovered and I confirmed working:
So here's the breakdown of the steps:
1) Create a new administrator account with password, or put password on your
primary account (administrator).
2) Enable Remote Access (via Safe Mode).
3) Make sure the laptop is accessible through network, worthwhile to give a
static IP, or record down the IP address. Also worthwhile to remember the
computer name if you have Dynamic IP.
4) Reboot the laptop and leave it connected to the network.
5) Use an XP RDP Client, and access Vista's Remote Access.
6) Connect without username/password from XP RDP Client, and when on Vista's
"Welcome Screen" logon with appropriate details.
7) View Device Manager, making sure that System devices > Intel 82855PM
Processor to AGP Controller - 3341 is enabled. Check Display Adaptor > Radeon
9000 is installed.
8) Right-click on Radeon 9000 and update the driver manually with the INF
from XP driver.
9) Reboot
10) Voila!
Note:
Make sure you have the latest XP driver for Mobility Radeon 9200, in my
case, I got mine from HP's site. Extracted to a folder or removable drive for
use in step 7 above.
Alternative solution without using WDDM 82855PM AGP Controller:
Prior to the above solution, Barry suggested trying to get past the "black
screen" with using Safe Mode to disable 82855PM AGP Controller in Device
Manager. That worked but you don't get the optimised driver and display is
fixed maximum at 1280x1024. On my 1680x1050 displaying 1280x1024 is FUGLY!
Anyhow, if you are currently tolerate with this solution, you can try the
above solution by making sure Remote Access is enabled, and AGP controller is
enabled too. Then follow steps from step 3 onward.