Q: distnoted consuming 100% cpu

The good news is that it isn’t a virus. This process was created by Apple and runs along side iTunes to provide mobile device support. I would just try and force quit the application. http://www.groovypost.com/howto/distnoted-exe-process-running-background-safe/

Alternatively you can try going here ..Step by Step to fix your Mac

Hope this helps, best of luck to you.

Try running this program and then copy and paste the output in a reply. The program was created by Etresoft, a frequent contributor.  Please use copy and paste as screen shots can be hard to read. On the screen with Options, please open Options and check the bottom 2 boxes before running. Click “Share Report” button in the toolbar, select “Copy to Clipboard” and then paste into a reply. This will show what is running on your computer. No personal information is shown.
  

Etrecheck – System Information

You are welcome. I'm not 100% sure, but I doubt it is a virus because currently there are no known viruses that affect a Mac.