......

Thanks for the tip, but with these problems I handle easily.
In this case, were used a farm, working on darkcoin, with the best settings and drivers for maximum performance.
Only changed the program-miner - "spreadminer".
HD7970, R9 270X, R9 280X - involved in work on the first try. But the R9 290 in two different system blocks stay with exactly the same errors.
Perhaps the reason is that I have Russian version of win7 Ultimate with Russian drivers.
There will be time, will try to collect from source miner directly for this machine, and while they may produce a different currency.