About a year ago I built an htpc system, fully fan cooled with Noctua's, with the intention of eventually doing a full liquid cooling on it. Well, I have done just that this weekend. The system was completely and fully functional with no issues prior to the teardown.
THE PROBLEM: With everything fully connected and hooked up, when I flip the PSU power switch my mobo lights up (the ROG logo, power and reset buttons). When I hit power, either on the case or directly on the mobo, nothing happens. No fans spinning, no status LEDs, no LED code, nothing.
Here are the system specs:
-Maximus V Formula mobo
-Intel I7 3770k LGA1155 cpu
-ORIGINALLY: Corsair AX860i PSU, CURRENTLY: Koolance 1000atx PSU
-Samsung 840 Pro 512gb SSD
-Dual 7970's for the GPU's
The only thing that has changed, hardware-wise, is the PSU. The cpu was never removed from the mobo, the only thing that changed there was a new bracket on the back of the mobo (with a full-face rubber grommet completely isolating it from the mobo) and the pins going through for the waterblock mount on the hood of the cpu.
Here is what I have done to test the problem:
-As the obvious root of the problem, I changed back to the original PSU. I left everything hooked up and just connect everything back into the original PSU. Same problem. The original corsair psu has a self test button, so I double checked that it is indeed functional. When you use the self-test button you can hear a switch somewhere inside closing and opening when you hold and then release the self-test button. As the PSU has no physical switch on the back, this is what it does when the computer normally turns on and off. I mention this because unlike the koolance psu, this one quickly clicks closed and open again when I hit power on the mobo/case. Basically something is causing it to quickly turn on and then off again from what I can tell.
-Checked that I have a fan connected into the cpufan slot. As I'm using a radiator and fan array, I will only have one fan connection, I can change that if need be or hook any other required fans in if needed to test.
-Removed the mPCIe wifi card and module. As the mobo is mounted and whatnot, the clip is still sitting on the mobo. Been trying to avoid removing the entirety thusfar as it would mean draining and disconnecting a bunch of stuff. I can do that if I need to though.
-Tried disconnecting the ssd and my blu-ray drive.
-Double checked all the power cables to make sure they were seated. I have the 24 pin, 8 pin and 4 pin connected. I have tried removing the 4 pin and only having the 24 and 8 connected.
-Double checked that the front-of-case connections were solid (power, reset, led's, etc)
-Loosened the screws on my mobo (they were a bit tight). I haven't completely removed them, but the screws that are in there are the same ones that were originally in there.
-Put electrical tape on any metal components of the liquid cooling that may cause a grounding issue
-Tried every combination of RAM that I could think of
-Reseated the gpu's
I've done everything I could find online that worked for people with similar problems, but I'm still getting no results. The fact that I'm not getting ANY led's whatsoever is what concerns me most. It seems like the mobo has some sort of lock out going on which is preventing it from powering anything (even though it is, apparently, getting power). That leads me to believe it's a short of some kind. I figured I would post here to see if anyone had any ideas before I start dismantling and draining it so I can remove the mobo from the case.
Thanks in advance for any help you guys can offer!
