Don't connect the PSU to any of the system components, just to the pump.
Mix coolant in 500ml at a time (in ratio the coolant recommends), take off the MCRES Micro reservoir top and start to poor in until mostly full. Make sure the coolant starts to flow into the pump to prime it.
If mavity alone does not do this, tip the case so it aids the coolant into the pump. Top up reservoir with fluid, as it will have gone down due to some now residing in the pump.
Repeat this until you can get as much coolant as you can around the loop without starting the pump. When you think you can't get any more coolant around the loop without the aid of the pump, then short the ATX connector to jump start the PSU and start the pump.
Keep a close eye on the coolant level is the reservoir, it will go down in a blink of a eye so get ready to pull the paper clip (or what ever you used to short the ATX connector) from the PSU to stop the pump before it sucks air back in due to having no coolant. Top up reservoir again.
Keep repeating the pump kick starts until the coolant goes around most of the loop. Then leave the pump running and the reservoir cap off so air goes around the system, into the reservoir and out through it's bleed/fill hole.
Give the case a violent shake now and then to dislodge any air inside tubing/blocks.
Once you think all the air is gone, then slightly open the bleed screw on the themochill radiator until a tiny bit of coolant comes out, then re seal screw.
Replace reservoir cap, and you're good to go, just make sure you have coolant at least level with the Swiftech Logo in the MCRES Reservoir.
