You are wrong.At 3 months, Amazon isn't going to do anything for you anyhow. Your warranty is NOT through Amazon, it's through the hardware manufacturer. Amazon doesn't generally allow returns of products after 30-90 days depending on what it is, but that is not an RMA, it's a return, even when they do authorize it. For Amazon you simply go into your Amazon order history, find the item, and click on return. It will walk you through the rest of the process however that's not going to apply to this item which was installed and failed.
You need to contact Cooler Master and you will need to provide them with your proof of purchase information as part of the RMA approval process.
So if you are outside North america in some other region, then I'd suggest you contact Amazon customer support by chat or phone and tell them that there is no option on your purchase history to initiate a warranty replacement. Seems that is your ONLY path forward.In North America:
If your product needs repair or defects within the first 30 days after purchase, please return it to the merchant from whom you purchased the product with and enclose a description of the problem and a copy of your proof of purchase with the defective product. All replacement products have an extended 30 days of warranty after the item has been received by the customer. For any extended warranty services covered under the Program, please log onto our website to complete the RMA request form online. The request form will allow you to request for replacement parts. If you have any questions regarding the RMA process, please submit a technical support ticket here. When returning product, please be sure to enclose a clear description of the problem and your proof of purchase with the defective product and return it as instructed by the Cooler Master RMA Department. Be sure to package the product securely (preferably in its original packaging) and ship it postpaid. Your dealer or Cooler Master will not be responsible for damage due to shipping. During the warranty period, your product will be repaired or replaced without charge, excluding shipping and handling.
Outside North America and Europe:
If your product needs to be returned within the warranty period, please do so through the retailer or distributor from whom you purchased the product.