nono i mean , the tubeing isnt long and id have to lift the MB up with a radiator on it once i test it outside of the case to be sure everythings fine
I'm not sure I understand what you are saying...
Yes, you can easily power it up outside the case and not have it attached to anything at all except for power. You just need to disconnect your motherboard ATX 24 pin plug and jumper any green and black wire in the plug to power your PSU on for your 12v. You'd simply need to run a molex-to-fan header adapter to the pump unit. This is how we fill, bleed and leak test watercooling loops, but you shouldn't need to do this with a closed loop cooler- it's factory filled and sealed. Just look at the tubing/fittings closely to see if there are any leaks or any signs of coolant, install the cooler and power up as usual, when ready to do so. Keep an eye on all areas of the cooler, specifically around the pump/block portion and tubing connections on the pump as well as the radiator.