NVIDIA GEFORCE GO 7600 - Only Get Black Screen

> My Machine Spec Is As Follows:
>
> HP Pavillion dv8000t
> 2GHZ Intel Centrino Duo
> 2GB RAM
> NVIDIA GEFORCE GO 7600
>
> I have a dual boot of Windows XP Pro SP2 on C:, and Windows Vista Beta 2
> Build 5384 on D:
>
> Every time I try to boot Windows Vista normally, all I get is a black
> screen, I can see the hard drive light churning away but no screen.
>
> The only way I have been able to get Vista to boot, is by using the advanced
> boot options, and either selecting safe mode, or choosing last known good
> configuration.
>
> When I boot in Last Known Good Configuration, it boots into 800X600, i can
> then change right up to 1680x1050 res. When I look at the drivers, I can see
> that it recognises my display adapter as NVIDIA GeForce Go 7600 (Microsoft
> Corporation - WDDM) and the date of the driver is 27th April 2006.
>
> I can use Aero and 3D Flip etc, but what bugs me is that I have to keep
> booting using last known good configuration, and have to reset the screen res
> every time, and try and install all the unknown devices again.
>
> Does anyone know what I can do to remedy this? I have tried to install the
> 88.61 driver from Nvidia which is dated 23rd May 2006, but it says the driver
> is not compatible with my hardware. Please help, I could really do with
> trying to resolve this.
>
> Regards
> Bob