ok i will try that method,but i cant today,i will do it i i will tell you if it works.

any suggestions about the reboots? i saw a post yesterday that one guy had the same problem and he did something with fdisk -x something like that he removed some nvidia kexts and it worked but he didnt give details.Unfortunately i cannot find that post again to help you.

Many guys have the same problems like me,so this may be helpfull for others also.
Thanks again!!