Just a couple of questions to get started,Have you installed any software recently? i.e. around or after the time this problem startedWhat other Security Software do you have? i.e. Anti Virus, Anti Spyware or any other FirewallsAnother possibility is that the Malware isn't fully removed, running Combofix alone wouldn't clear the Machine you should run more than one tool, unless you did? If so what other scans did you run?You could try running Malwarebytes, download link here - http://majorgeeks.com/download.php?det=5756Make sure you update it before you run the scan, once you have run the scan copy and paste the whole log into your next reply.