Win7 32, Ati 5850, catalyst 14.9 but ERROR: clGetDeviceIDs() -1

[mao]

Hi.
I try to utilize oclHashcat, I prepare a new machine (clean machine) only with win7 SP1 32 pro (updated at today), an ATI 5850 and the version 14.9 of Catalyst.
When I run the program the error is:
clGetDeviceIDs() -1

I tried to reinstall the dirver: nothing.
I tried to install the latest Catalys: nothing.
Reverse to 14.9, nothing. installed SDK 2.7, 2.8, 2.9-1.599.381.... nothing

clinfo report the vga card correctly.
if I try with --force or with --gpu-devices=1 nothing change.

help me please.