From some times ago I am seeing these unknown and random keygens and suspicious looking files. I deleted all of them but they come back! My anti virus software (runs on BitDefender engine) doesn't say anything. I downloaded Malwarebytes to perform full scan and got rid of everything. I use Comodo for firewall and it doesn't say anything either, but I get message on startup saying it closed System Performance Analysis Tools or something and I think this is related to these files. I've also just ran Kaspersky Online Scanner and it said 1 was infected.Trojan.Win32.Agen.Ambb is the name.C:WINDOWS/pss/userinit.exe I have found that file in my msconfig->startup so I unchecked it many times but failed. What should I do? Help me please!