Most key loggers are very hard to detect. There are a few that kaspersky and a couple of other companies detect, but most hide themselves well. If you are sure you have a keylogger or RAT on your system and you cant find it or get rid of it, id suggest a full format. You can go to
[Only registered and activated users can see links. Click Here To Register...] and ask for help there, if you do not wish to do a full format. Make sure you VirusTotal all files and apps downloaded from the net. Even though Most RATs and Loggers are crypted, or "packed". Some are fully undetectible for quite some time. Watch some youtube videos titled "Having fun with my RAT" it will make you think twice about downloading modified software.