Hello, again, one hour later.
I did another Roguekiller scan, in safe mode this time, and it found this:
¤¤¤ Registry : 2 ¤¤¤
[PUP] (X64) HKEY_USERS\S-1-5-21-1239764888-2148109162-3447206424-1001\Software\Microsoft\Windows\CurrentVersion\RunOnce | Application Restart #1 : C:\Windows\System32\msconfig.exe %windir%\system32\msconfig [-] -> Found
[PUP] (X86) HKEY_USERS\S-1-5-21-1239764888-2148109162-3447206424-1001\Software\Microsoft\Windows\CurrentVersion\RunOnce | Application Restart #1 : C:\Windows\System32\msconfig.exe %windir%\system32\msconfig [-] -> Found
Is this false positive please? I uploaded text file. Thanks