I could not find anything that could translate into anything but question marks, I even ran this error thru some anti-virus sites. Nothing found.
Ok have you installed anything just before this started to give you grief? If you did write down the program name and go to that site and do a search for this DLL file it may show there or ask their tech support thru email.
One thing you can try is going back to let's say three days or so before this started using System Restore. This might help and whether it does or not I would like you to do a Hijackthis. Just follow the below instructions:
Please read this guide before actually doing the procedure
And it has all of the links for downloads you need.
Preparation Guide for use before posting a HijackThis Log http://www.bleepingcomputer.com/forums/t/34773/preparation-guide-for-use-before-using-malware-removal-tools-and-requesting-help/
Go to the following to post your log file and it will be analyzed by a qualified tech
HijackThis Logs and Analysis http://www.bleepingcomputer.com/forums/f/22/virus-trojan-spyware-and-malware-removal-logs/
This might take a while for the team to get back to you because they take these in order they come in but it will tell you everything.
Have a good day