|Try going back to a good restore point.|
Try System Restore, I have had good results using this way or in Safe Mode, different to Last Known Good Configuration in Safe Mode.
System Restore is accessed the following way:
1. It's a good practice to shut down all other applications before using System Restore, as it requires a full-system reboot to complete the installation. Connecting to the internet is not required, however. So shut all applications. Then click "Start."
2. Start > All Programs > Accessories > System Tools > System Restore. Then the program will load.
If System Restore doesn't work in Normal Mode, it might work in Safe Mode.
Toggle F8 or Press Ctrl ( depends on your comp ) during bootup ( just before, verifying DMI pool, message comes on )
Select Safe Mode.
How to start the System Restore tool at a command prompt in Windows XP
Process of elimination.
fatal error failed to load library oleaut32.dll