Hi, I keep getting pop-ups telling me that a malware or threat have been detected. Avast pop-ups say that they were moved to the virus chest. The infections that keep coming up are Win 32 Malware Gen, Win 32 Downloader pKU (Trj), and Win 64 Sirefef-A. I have never had this problem before and I'm new here. What should I do? Please help!