I used to have an Asetek 510 liquid cooler attached to my CPU but I feel like that shouldn't make a difference if my computer is idle/not booting to OS...To be fair, when I did have it attached, the computer wouldn't shut off but base temperatures were still high (idle ~55c, light use ~55-60, gaming 70+). Is it normal for an i7 to behave this way/have such high base temperatures and 2) does a liquid cooler, albeit a bad one, have such a dramatic impact on temperatures?
You need to strip your cooler off the Cpu as it is likely you have fitted it wrong.
If you are using a stock cooler, one that came with the cpu. first check you have removed and bit of paper that may cover the square coating of thermal paste applied to the bottom of the cpu cooler.
Bad conatct between the Cpu heat spreader plate and the Heat sink with cause this so take it apart again and check its fitted right.