Globalroot/systemroot removal problem

I have been working for a couple of days trying to get rid of this.  Norton Internet Security keeps detecting it as Infostealer and gives several files beginning with msivx*.dll located in globalroot/systemroot/system32 that I can't find in my windows/system32 folder.  I have run avast anti-virus, along with malwarebytes anti-malware and removed a lot of stuff, but still am getting that this is being found by Norton.  I have run Combofix as well, and it is showing MSIVXSERV.SYS and MYWEBSEARCHSERVICE listed in the Drivers/Services.  I don't know where to go from here, does anyone have any help they can offer?  Thanks!

 

Sincerely,

Dustin Beare