[Q] i/o scheduler "null" topic

I am using galaxy y gt-s5360 running hyperion 9 gold final rom and savie#73 kernel. I also flashed a tweak Pure performance x stock edition downloaded from galaxyyarchive. My cpu governor is smartassv2 and i/o scheduler is cfq. After i flashed pure performance x, there is a slight lag on my phone. And my internet slows down, im not sure maybe because of my network. I downloaded a game through ucweb browser and at 12:00 am exactly. My phone hanged and i removed the battery and turned it on again, it is stucked on logo, i assume it was a bootloop, so i go to clockwork recovery default for savie kernel. I scroll and it hanged again. I just turned it off and charged it. I wake up 4am and i turned it on and go to clockwork recovery but the phone says no sd card installed even i have sd card inserted in my phone. I rebooted and a notification error occured that cpu set up failed and i go to settings>cpu set up and i see my cpu governor is smartassv2 and i/0 scheduler "null or unavailable" and i cant change it. So i reboot again and do a factory reset and nothing happened. Guys please help me. my phone cant read my sd card and i keep inserting it again. maybe its a bug from pure performance x, because i only get this problem after i flashed pure performance x. so guys help me out. thanks!