I got this virus on my computer that I haven't been able to get rid of. I tried Ccleaner, resetting my chrome browser and I still get this annoying little cmd prompt window that pops up all the time now. It hasn't taken me to any bad sites or anything, just the cmd prompt and it gets long before I can close out of it. Is there a way that I can get this purged from my system without buying expensive Anti-Virus software?