Have you tried the GPU in another system?
 
Have you tried another card in the Sonnet?
 
Did you register the card with EVGA?  If you have not, then you should do that now. 
 
Did you purchase the card from EVGA or an EVGA authorized reseller? 
 
The worst case scenario as far as warranty, i.e., you bought it from a non-EVGA authorized source, is that the three year warranty would begin on the date it was shipped from EVGA.
 
If you are in the three year window then you can RMA.  Here is the information to get you started:
 
Warranty:  https://www.evga.com/warranty/graphics-cards/
 
RMA Info:  https://www.evga.com/warranty/rmaprocess/
 
RMA Step by Step process:  https://www.evga.com/support/rma.asp
 
You start first by registering your card.  If you do not have a receipt or invoice, you will have to type up one basically stating you are the owner, full SKU number (model), serial number, and the date you purchased the card (best of your knowledge).  It is just to show you are the present owner of the card.  If you purchased directly from EVGA, they can probably find the record.
 
Follow all the steps and you should not have any problems.
 
Best of luck to you.
 
 
 
 
 
 

Coreyf311
Would typing up all the info and uploading it as you suggest work for second hand?

Yes it would suffice.  Don't over complicate it as EVGA just needs something that shows that you now own the card.  Just think of it as a simple chain of custody.

Coreyf311
Thanks again, would something like below work?  sorry, just want to get this right the first time.
 
This is to certify that I am the current owner of the below EVGA Graphics Card.
Purchase Date: 1/6/2021
MODEL: EVGA GeForce RTX 2060 SUPER XC GAMING
PART NUMBER: 08G-P4-3162-KP

Yes with your name.  Now, immediately edit your post and delete the serial number.  Never post the serial number for anything on the forums.

No, I took out the serial number.  The part number is fine.