[Clover] El Capitan sometimes boot, sometimes doesn't

I got an working install of OS X El Capitan in a i5 Ivy Bridge laptop. Almost everything works (audio, Internet, battery status, HDMI video), while a few other parts don't (HDMI audio). But now, I have a problem: some times Clover just hangs at boot.
I might turn on the laptop, and it can boot into El Capitan just fine.
I might turn on the laptop, and it hangs on the Apple screen forever. If I get this error while in verbose, it stops right before when video should be taking place (bluetooth...

[Clover] El Capitan sometimes boot, sometimes doesn't