I'm working on an old supermicro motherboard (X7DCL-3) that I bough't two years ago from Aliexpress. It was working fine until two days ago when I tried to watercool it. I disassembled all the computer to clean it and put the stuff for watercooling on it. I mounted all back to the case and attempted to turn it on, but, at the last moment I decided to dismount all the watercooling stuff and test it outside the case. When I tested it, I discovered that the tubing I was using was to big and the sistem was leaking on the waterblocks, so, after a quick search I found a smaller tubing and remade all the loop. I tested the loop to make sure it wasn't leaking and finally mounted all back to the motherboard.
So, at this point I'm not sure about everything I tried, becouse it has been three days of testing every possible combination of the setup, but, it's possible that I moved some jumpers on the motherboard. The thing is that I tried to turn the PC back on, but, it didn't post, it just turns on the fans, the pump, the graphics card, but nothing else.
The list of components I'm using is:
Motherboard: Supermicro X7DCL-3 http://www.supermicro.com/products/motherboard/Xeon1333/5100/X7DCL-3.cfm
Cpu: Xeon E5450 X2
RAM: Samsung low profile M392T5160QJA-CE6 4Gb X2
Samsung M392T5160QZA-CE6 4Gb X4
PSU: Thermaltake TR2-430
Graphics Card: ECS N9500GT-1GKS-F
Waterblocks: https://www.ebay.com/itm/Aluminum-PC-Water-Cooling-Block-for-CPU-Graphics-Radiator-Heatsink-40x40x12mm/132546928799 X2
Pump: https://www.ebay.com/itm/SC600-DC-12V-1-2A-14W-Motor-Water-Cooling-Pump-No-Brushless-3-pin-Plug-G1-4/181908611928
Radiator: 120mm aluminium radiator
