[Bf-cycles] Cycles GPU render

[Germano Cavalcante]

Hello, (sorry if I interrupted something), but:
I have an i5 ultrabook with graphics card "AMD Radeon HD 7570M, 1GB"
In: Blender User Preferences/System, I selected the option "OpenCL"
and compute device: Turks
I hoped that by selecting the option in GPU Compute experimental
Feature, the Cycles would render faster, but did nothing, was "loading
render kernels" for infinite time.
What could I do to fix this?
If anyone can help me, please return the message.

-- 
Germano Cavalcante