reflash stock rom let it boot then flash this twrp
http://xdaforums.com/galaxy-s5/development/recovery-twrp-recovery-v3-0-0-0-t3336570
after that flash this supersu in twrp
https://download.chainfire.eu/964/SuperSU/BETA-SuperSU-v2.74-2-20160519174328.zip
that was my way for fix but be sure you turned retractive lock off in security
Bonjour
Thank you very very very muchhhhh