Supermicro mobo not posting

[Quicazan]

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

 

 

[Hiitchy]

If there was a leak on the board, chances are the leak caused corrosion which ended up shorting your board somewhere near the leak. The best thing to try and do is get some rubbing alcohol and a q-tip and see if you can find any corrosion and clean it off gently with the rubbing alcohol.

[mortino]

Check your jumpers. if you have for example the clear cmos jumper on clear it will not boot. I'm not familiar with this board in particular but a lot of older and workstation boards have jumpers for voltages and on/off switches.