Thanks both of you for the help really. I intalled firts the Microsoft KB947821 (System Update Readiness Tool) but later didnt let me install the next (Microsoft KB3020369, Microsoft KB3172605). Either with the Update for Windows 7 for x64-based Systems (KB3135445). It keot uploading the bar but no actions.
After more search I finded the problem solve with the upload KB3102810 (for futures users with problems). Intall, reboot and put to work the windows update. It works.
Thanks again a dmdilks and Tiger for the help