Water Cooling damage, MOBO stuck in boot loop

jmcrowe

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Jan 28, 2013
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Ok, so I'm in a bit of a tough spot, and I'm just looking for some advice/opinions from some of you fine folks that are much more experienced at this than me. Here are the details:

So I completed my first build in January and everything went smoothly. A couple of months ago I was doing some work on my computer when all of a sudden the monitors cut out. My immediate thought was that somehow the monitors went to sleep, so I sat there for a few seconds clicking my mouse and keyboard trying to wake them up. I then took a look inside my case and saw that my waterblock had failed and was dripping coolant onto the GPU positioned below. I immediately powered down, then removed the card and drained the loop. Here's where my real problems begin.

Upon opening up the case and before powering down, it looked like everything was still operating as normal, just the GPU had died due to the liquid. I perhaps foolishly assumed that the extent of the damage lied with the GPU alone. So I filed an RMA with EKWB because of their failed block, and only this past week had a chance to try and get things up and running again. They replaced my waterblock and offered compensation for the GPU. So I hooked everything back up this weekend, powered up, and this is what I'm left with:

https://m.youtube.com/watch?v=vyZ-YZVBeR8

My motherboard appears to be stuck in a loop when trying to start up. You'll notice in the video link that there is no GPU in there. I removed it just to get a better view of what was happening. The same loop was stuck when the GPU was inserted, and I got no signal to my monitor during this loop.

So basically what I'm trying to figure out is, what other possible damage could have been done when the original GPU was leaked on?

I know it's impossible for anyone to say for sure, but I'm just trying to get an idea of what I'm working with here. As I said, this was my first build, so I'm relatively new to this stuff and haven't had to do a lot of troubleshooting before. I'm also at a loss on how to test my other components. I don't have access to another machine or can think of anyone who has one to test my other parts.

So any advice on this matter would be greatly appreciated. I've opened up a support ticket with ASUS to see if they can chime in on the motherboard behavior. I've also notified EKWB about more potential damage, which I really hope won't present an issue since I originally notified them I thought it was only the GPU at play.

For what it's worth, here are the parts of my build:

ASUS X99-M WS
i7 5960X
Original damaged GPU was QUADRO M4000, my replacement is GTX 1080
Samsung 950
32 GB DDR4 Corsair Vengeance
 
Solution
Honestly, every part could be fried, it's doubtful but it is still a possibility.
I believe you'll end up finding your motherboard has fried. Your CPU will probably be fine, as will your RAM.
There is no way to be sure without testing each component.

First thing I would do is test the PSU. Do you have access to another machine where you can test whether the PSU works or not?
After verifying the PSU I would test each stick of RAM individually. The CPU is a little more of a hassle to test as you need access to a machine with a specific socket. If you can test the CPU in another system that would be great.
I'm sorry you have experienced a serious failure and I hope you are able to resolve it in a timely manner.
Good luck and feel...

Grugbug

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Jan 22, 2016
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The first thing I would do is unplug the PSU, remove the CMOS battery and wait several minutes.
reinsert the battery and plug the PSU back in and try to boot. I'd try booting with a bare system and if you get a boot add one component at at time.
 

jmcrowe

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Jan 28, 2013
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Thanks, I'll give that a shot later tonight.

When you say "bare system," how bare are you talking? Just CPU/RAM?
 

Grugbug

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Yes, just the CPU, RAM and cooler.
I hope it works for you.

 

jmcrowe

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Jan 28, 2013
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Tried that last night and no luck. Thanks for the suggestion though.

Apparently I did find a machine that I'll be able to test my RAM sticks in, so that's a start.
Still haven't gotten a reply from ASUS or EKWB.


My question to you and any others who can chime in, is given what happened, what kind of likelihood is it that the problem lies with the motherboard, the parts, or both? I know no one can say for sure, but was just curious if anyone has run into anything like this or have heard about it elsewhere.
 

Grugbug

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Honestly, every part could be fried, it's doubtful but it is still a possibility.
I believe you'll end up finding your motherboard has fried. Your CPU will probably be fine, as will your RAM.
There is no way to be sure without testing each component.

First thing I would do is test the PSU. Do you have access to another machine where you can test whether the PSU works or not?
After verifying the PSU I would test each stick of RAM individually. The CPU is a little more of a hassle to test as you need access to a machine with a specific socket. If you can test the CPU in another system that would be great.
I'm sorry you have experienced a serious failure and I hope you are able to resolve it in a timely manner.
Good luck and feel free to contact me if you need any help.
I've been in the PC field since 1974 so I have seen a lot of problems over the years. Don't feel bad, you are not alone.
 
Solution

jmcrowe

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Jan 28, 2013
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Thanks again for the advice. Greatly appreciated.

Quick question... What am I looking for when testing the PSU? Obviously I'm getting power to the board and GPU when I hooked it up again, and I did run a 24 hour leak test when re-running my water loop. Is this something I can test with a multimeter, or do I just need to hook it up to another system and see if it posts?

And hopefully you're right and it's only the motherboard. The CPU is pretty pricey and I really don't want to replace that.

Again, thanks. I'll let you know how things work out.
 

Grugbug

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The only way to really tell is to plug it in to a known good system and see if it POSTS.

You can get the pin assignments for the PSU and check voltages but the voltages would not be under load so the results will need to be taken with a grain of salt.
 

jmcrowe

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Jan 28, 2013
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Just wanted to say thanks again for the advice.

I ended up just getting a general diagnostics check done at a nearby MicroCenter since I couldn't find another system to check my parts on. Based on that, it looked like the problem was the MB, which I ordered a replacement for and finally got around to swapping out last night. Started it up and got it to POST and then booted into Windows with no problem. I did seem to notice in the BIOS that 2 of my RAM slots weren't registering, but I seem to recall this happening before when I originally put the build together and fixed that issue. I'll see if I can check on that tonight. Worst case scenario there is that I have to replace 2 DIMMs which is fairly cheap compared to bigger problems I could have had. And it looks like EKWB is refunding full cost of replacement GPU and MB.

So despite my initial freakout, I'll hopefully be fully back up and running shortly. Thanks again for the original reply and pointing me in the right direction.