How to check warranty status

So - apparently, Amazon is fulfilling orders with effectively  counterfeit Lenovo Tiny machines.

These machines come with SSD, but the original part numbers from Lenovo are non-SSD.

I have a dead SanDisk x400 SSD (from one of these) that I have registered and it says it’s in-warranty.

However, I don’t have the  original proof of purchase for the X400 since some third party  included it with this machine.

What recourse do I have to get a replacement SSD for this clearly warranty-covered drive?