This is what happened with my nVidia RTX 2080 TI - ASUS DUAL-RTX2080TI-O11G
https://www.youtube.com/watch?v=FiRbkXoBPmA
After waiting nearly 2 weeks for a replacement card and then being told there is no stock available I gave up on the RTX and bought 2x GTX 1080 Ti's. Not happy with the support...