I hope an answer in English is good for you.
You didn't say what drivers you downloaded and installed. The specific thread for catalyst driver support is located at: AMD Support and Game Forums - Desktop Catalyst Drivers and Software. If it is not Catalyst related, look for a good spot in the consumer support forum. There are lots of gamers in the community.
If you have a reproducible case, you can file a defect report at www.amd.com/report.
See the FAQ at:
To see all the FAQs about the forum