Abz22

Please help me my computer has trojan virus apparently S-1-5-21 which is infected my c/user folder in C, ive tried scanning with malwarebytes awcleaner, eset, avast, superantivirus, firewall some of them detected threats which i deleted but it stills comes back.. its slowing my computer crashing games and deleting files S-1-5-21-1733934637312118 https://gyazo.com/44f4eb1c0254c4922f060aaeb385519e https://gyazo.com/d4c1f0b5e829e29d540688ab2d83c055 im using activtion key given by some youtube guy its logging me out of steam and corrupting my files what should i do please help someone there r some hidden files all around C/ my folder they hiding some files https://gyazo.com/89b94f1bbcba61a671afef1d51052631 https://gyazo.com/e2eb4e4f66ad7275bfee61d2b85e20fb Addition.txt FRST.txt