daneharrigan

Try to follow the same steps I outlined in this thread. Find the part number on the card (for me it was an AIO). My part number was two numbers, dash, a few more numbers. Get a support agent on the phone and ask them to look up that part number. They can see all C1 parts, but won't be able to sell you a replacement. Once they've found it, have them open a ticket with their warehouse asking for a replacement part to be sent to you.

@nikon331 make sure to order some thermal paste too! At least with the AIO that was mailed to me, the paste had dried out.

@nikon331 their C1 AIOs are custom and can't be purchased by customers ever. Get the part number of the AIO off of the radiator. Mine was 53-something. Give that to the support person. They'll be able to look up the part in their system, but like my previous post says, their system will not let a customer buy. Support will need to contact their warehouse with the part number and have them send it to you.

Back with another update. First, for everyone that feels Corsair doesn't stand by their C1 products, I felt the same way originally. Honestly though, I have gotten significantly better support when I talked with someone on the phone than via a support ticket. Link them to my post above and ask them to do the same for you. Onto the installation. The original AIO was fairly easy to remove. Two screws were a bit awkward to reach, but I had the CPU in a matter of minutes. Two screws to remove the side of the case, 4 screws to detach the pump from the CPU, and there are two wires you need to unplug from the board, don't forget the placement of the small wire. The new AIO came with thermal paste already applied, but that had to go. The paste must have dried out or something because I was getting 100C temperatures when I used it so I removed the paste from the CPU and pump and applied Noctua NT-H2 instead. Now I'm getting CPU temps in the 40-50C range with a max of 70C. My C1 is completely fixed. I would highly encourage removing your AIO and applying a new set of thermal paste, but also link support to my post and ask to be helped the same way I was.

Following up as promised. For context: my C1 was crashing ~6 months out of warranty, but it was under warranty with my credit card as long as I got Corsair to state that my machine was busted. After numerous support tickets, escalations, and phone calls the final answer was, "we aren't going to help you." I'm sure you can believe that I wasn't pleased. Fast forward to today. My friends and I diagnosed my problem to an overheating CPU and a failing AIO. I contacted Corsair online as well as by phone. I'm not suggesting one option is better than the other, just that I got different answers from different people. The online ticket yielded a link to an AIO in the store that wasn't compatible with my C1. The phone support took down my C1 model number and the part number found on the AIO radiator (you can see this if you open the case). The AIO part number started with numbers (two numbers, dash, a few more numbers). This is important to know because their inventory system tracks these, but does not allow a customer to purchase them. The support agent opened a ticket on my behalf with their warehouse asking about this specific part number. This was an internal conversation so I never saw what was discussed, but about two days later that support agent asked for my mailing address and sent me a new AIO! I can't express my gratitude enough to this support agent. I was ready to write off Corsair as a whole if it wasn't for this interaction. It really felt like someone cared. I hope this helps some of you!

I've contacted Corsair asking how to purchase a replacement CPU AIO for my Corsair One Pro (from 2017). I'll post back with my results.