A dynamic link library (DLL) initialization routine failed

I am running Notes 8.5.1 under Windows7 Home Premium. Whenever I try to view the properties of a database or document, I get the following error message: “A dynamic link library (DLL) initialization routine failed.” I have un-installed and re-installed numerous times with no joy. I have also installed fixpack2 (lotus_domdesign851FP2_devworks_win.exe) Anyone have an idea of what might be going on? I am at a loss.