Luc, Iv'e literally drained and filled this loop more than a dozen times in the last week..all I can say is thank god I put a drain valve in the loop and it works so effectively lol.
So true!!!! When I started watercooling, I didn't install any sort of drain solution....I quickly learn it was a bad idea lolll.
Ok guys, pump/res combo detached from case, held on to it and tested, still black screening under test. Oddly tjough, when I drop the core mhz by 100, no black screens. These cards were doing 1150mhz for fun on air previously so I know it's not the cards. I ran 950mhz on core and no black screens.
30c to 35c on the core, 41c vrm1 and 57 on vrm2.
Maybe the pump and the higher frequency interfering somehow? I don't know, just randomly guessing here lol. ocuk sent out a new pump this evening so will get that in the loop tomorrow night and see what's what.
This is such a weird issue! At least we will know if the pump is the culprit with the new one in place soon.