XP black screen after installing Nero

[Refract]

I installed Nero 6 and rebooted. XP makes it all through up to the progress bar, then the screen goes black. Light on monitor is still green.
Booting in safe mode works fine every time, but earlier today it did boot up normally.... then reboot,.. and screen is black again.

xp professional
dual MP AMD 1800
quadro 900 xgl graphics board

any ideas?

 

[Tarkus]

I believe there was a Nero 6 patch for XP SP2.

 

[Refract]

tried all this

Seems to only happen when i have my 80gig firewire attached for some reason.
Otherwise it boots up fine.
But now I try to burn Nero it tells me, "communication failure".
I've done all the searches on this. I've enabled DMA. I've installed the latest firmware upgrades for my DVR AO4.
And still getting these errors with the latest Nero 6.6a
here is one of the errors...
"Data in Burst Cutting Area (BCA) does not exist
Start sector number of the current Border-Out: 0 h
Start sector number of the next Border-In: 0 h"