Backup anything that you can't bear to lose. This won't be likely to destroy data, but it may prevent you from getting back into Windows for a bit.
Next, go to Start...All Programs...Maintenance...Create a System Repair Disc and create a System Repair disk
Test the disk to make sure it works.
Create a System Restore point (you'll use the System Repair disk to access System Restore if it's necessary)
Go to Device Manager (devmgmt.msc)...View...Show hidden devices
Locate the AODDriverxxxxxx entry and disable it (right click on it)
Go to Services (services.msc)
Locate the AOD service and disable it
Go to C:\Windows\System32\drivers
Locate AODDriver2.sys - rename it to AODDriver2.BAD
Reboot the system to see if that helps
If the system doesn't boot, the boot with the System Repair disk and use System Restore to set the system back to the previous restore point. That should enable the system to boot.