can't find c-state in bios for my Inspiron 5675

I recently converted my computer into a server that is running on unraid but i didn't know i would run into problems with my system completely locking up due to settings for the c-state causing me to have to manually restart the pc. I've been looking around the bios and there isn't many options in there and none of them even mention anything about power consumption. I was wondering is there a way to change or just disable that feature.