My problem is solved. Thanks everyone for help.
fredbertelmann, try to Automatically Detect and Install the latest driver from official AMD site:
http://support.amd.com/en-us/download
Previously I installed driver from non-official site, and, as I’ve understood for now, it wasn’t the latest.
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This reply was modified 9 years, 7 months ago by Shukfir.
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This reply was modified 9 years, 7 months ago by Shukfir.
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This reply was modified 9 years, 7 months ago by Shukfir.