cMBP (Mid 2012) Manual sleep not working

[PinkWaters]

Hello guys,
I cant seem to make my mbp sleep even manually, If I try to put it to sleep from the apple logo, the screen just turns off, but the computer stays awake.
I discovered I need to reboot the computer every time this happens, which fixes the issue temporarily for like 1 day then the issue comes back again.

I tried removing external USB drive, wireless mouse, and quitting all running programs.

 

[maflynn]

Did you try reseting the SMC?

 

[PinkWaters]

No, I will do it and test and see if it solves the issue, thanks