Manually download and save the 23.8.2 driver directly, do not install yet.
Use https://www.amd.com/en/support/kb/faq/gpu-601 to uninstall old drivers, then install the new from the saved driver pkg.
Or, if your previous card was nvidia you need to use DDU to remove all traces.
Also make sure you are using 2 separate pcie cables from the psu to the card (not 1 into 2 split).
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