Blue Screen from SRTSP.SYS

I run Vista Home Premium and have been getting blue screen errors caused by SRTSP.SYS, which seems to be a Norton file.  I want to remove and reinstall the associated product, but I don't know which one it is.  I have Norton Utilities 15 and Ghost 12.0.  I also have Internet Security, SystemWorks and an expired version of Security Scan, but I can't tell what versions I have of these products because they won't start up in safe mode.

 

This is a problem I urgently need to fix.  I'd appreciate any suggestions.