After looking in this forum and HP forum and others more forums I didn't find a solution for my problem.
My HDD from the computer above died. So I replaced. Now starts the struggle!!!!
Everything install's ok, only graphic's card no! I downloaded the drivers provided in HP Support and nothing, camed here and download the drivers no better, download the autodetect utility from AMD and downloaded the best driver but still nothing.
Sometimes I have "error 43" in device manager. Sometimes I have sound but no image!!!
I also updated the BIOS to the latest update available in HP Support!
I have windows 7 64bits.
Thanks in advance....