that chip is no longer supported. the only drivers from amd are legacy, official whql from 2015, and beta crimson from 2016, which i do not recommend. use the whql from 2015, if those don't work, use the last driver that worked. usually you can find old your drivers in your C: drive in an AMD folder.
https://www.amd.com/en/support/graphics/amd-radeon-hd/ati-mobility-radeon-hd-5000-series/ati-mobilit...
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