NIS 2010, Win7 Pro 64-bit

My entire system in unstable today. Win 7, 64bit, NIS 2010 (but I can't even open any part of it to see what v. it is. Computer won't shut down; Outlook won't s/r with error message of N AS plug-in needing to be disabled; I can't uninstall Norton (have tried several times, it hangs up; downloaded auto-detect and it downloads but won't open.). I see most of the thread help refers to v. 18.5 versus 18.1. I opened My Norton Account and can see the key and serial number/date installed etc., but not the version. 

 

 

[edit: Clarified subject.]