Popup porn Internet browser windows

One of our girls is getting popup porn Internet windows since yesterday. I’ve deleted all the temp internet files and it still popped up. I’ve done a msconfig and saw the following which I don’t recognised: winkfuk.exe, winkbl.exe, winkgv.exe and winkahm.exe. Do any of you recognise any of this, or is this what’s causing the popup porn and can I go into the system files and delete them?

Many thanks.