Wow64.dll, Wow64cpu.dll, Wow64win.dll

If you run Autoruns for Windows

These are false positives.

They are reported by Autoruns as well but you shouldn't uncheck or delete them:

_Wow64 File not found: C:\WINDOWS\SysWOW64\Wow64.dll
_Wow64cpu File not found: C:\WINDOWS\SysWOW64\Wow64cpu.dll
_Wow64win File not found: C:\WINDOWS\SysWOW64\Wow64win.dll

They are in system32

Launching  Windows PowerShell, type the following

cd $env:windir\system32

dir wow*

Directory: C:\WINDOWS\system32

Mode                LastWriteTime         Length Name
----                -------------         ------ ----
-a---l       10/30/2015   3:17 AM         314616 wow64.dll
-a---l       10/30/2015   3:17 AM          21240 wow64cpu.dll
-a---l       10/30/2015   3:18 AM         490752 wow64win.dll
-a---l       10/30/2015   3:17 AM          17408 wowreg32.exe