I've tried using the kill cheat but can't seem to get it to work. However, when I use the kill all it does. It's for the master conjuration quest, summoning an unbound dremora. The reason I need it is because my dremora won't disappear I've tried banishing it even killing it but he doesn't even react. My last save was 2 levels ago, though I thought I saved much more recent which I did but I saved over a quick save so that didn't help me at all. Hope someone knows how to fix it. Though, when I do use the killall cheat for some reason there is a dead horker in the courtyard. Thanks for the help.

tried using disable?

I think the kill cheat doesnt work on higher level creatures e.g dragons mammoths etc. Dremora too i guess. Try disable, like Terra Nova said.

Well, disable didn't work, though I did try the killall cheat, did what I wanted however I wasn't able to summon the daedra back, I'm assuming it is possible to summon it back provided I'm on the Winterhold college roof same area I summoned it before. However, it seems like a pretty useless spell if that's the only place to do it. My best bet is to just start back at my old save and remember to save before I summon it the first time. Thanks for the help though.