I found the problem.
The recent AMD driver (13-12_mobility_win7_win8_64_dd_ccc_whql) has a bug. I installed the old (hp original) and now the code works.
Thank you
The recent AMD driver (13-12_mobility_win7_win8_64_dd_ccc_whql) has a bug. I installed the old (hp original) and now the code works.
Thank you