[mothered]

The bonus Is, It's still under warranty, hence you have every right to claim a refund/replacement. This Is a huge advantage

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As with every SE, the first port of call Is to familiarize yourself with their terms, namely (In this case) their manufacturer's warranty. You need to Identify and establish the grounds on which refunds/replacements are Issued. You can then claim the Item Is yours, but It's defective and the exact method used to SE Nvidia, will be based on your research.

Do they have a repair centre ?

I haven't researched It.

As per my above post, that's your job.