I dont think nbminer has been updated in a long time, it may not support the 7900xt.
I would try running amd-ocl-install 6.0 6.0
and switching to another miner like teamredminer
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Just type that command in the shell and press enter, if you are on the screens above you just need to hit esc first
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YOU ARE THE MAN!!! Thank you !!!
problem resolved. Keaton rocks