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For an HD6970 I had installed crimson 16.2.1 drivers on a PC with W8.1 x64.
Want to upgrade, I uninstalled them with DDU, and after that I was not able to install any drivers version, official and beta, and also earlier.

http://s12.postimg.org/qkjg7o35p/Immagine.jpg

The installation never is successful, and the card is always recognized as microsoft generic in device management.
The only solution was to restore a previous point system, and all returned to work properly.
Then after a final cleaning and installation successful, I tried updating drivers from management devices pointing to the folder C: / AMD where there are various versions unpack.... VGA recognized and drivers installed , it is taken the 16.2.1 (despite the presence of others).

1. what is the initial issue (installation not successful)

2. how can I resolve to freely choose the most suitable version (like an earlier, for other reasons)

3. if I should just install the drivers manually as last, how can I restore / install / or call up the software drivers that do not currently cien I receive?
 
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