sstray64.exe application error, mmc.exe application error, and a zte usb modem that has started giving me access violation errors/msdart.dll and Eolesyserrors in module dll_netcard_r.dll
Windows 7 Home with Norton 360 2010
The problem started with my ZTE USB modem giving me the different access violations, it says that msdart.dll was not designed to work with the operating system, along with the Eolesyserrors and Eaccessviolations. It previously worked fine, and now I'm not sure why it won't work.
I also after the previous errors started, that right after booting up that it gave me a sttray64.exe application error. I would close it, and eventually had Norton not let it bootup with the system which solved that problem. Then I noticed that I also was denied access to the Device Manager through a mmc.exe application error. Also certain command prompts like eventvwr give me the application error etc.
What kind of problem could this be?? It seems to be acting like a virus, but my system speed and functionality has remained great. It's not slow and doesn't reboot or give me problems outside when I look for the things mentioned above. Norton has always been up and running and its never given lets worms through before.
I've tried system restore back a few months and from the backup I had on an external but it doesn't change anything. Would a return to factory settings help?
Thanks for any suggestions,