This is my first build from about 3 months ago and was working fine until I installed my new h70. Now, when I power on it shuts off right away before POST. I've tried resetting cmos and reconnecting the psu connections but it still shuts off right away. I'm pretty sure its not the new cooler because I installed it just like in corsairs videos and its in pretty snug, but everything was working fine until after the new installation (was using stock heatsink before). Not sure what to do now, any help would be appreciated greatly