Hi jeffce,
sry for all the incovenience...and absolutely thanks for your support!when i try to do a new backup, an emerging message appears:
error saving file C:/windows/ERDNT/13-03-2012/BCD
continue with next file?
[ RegCreateKeyEX:5 - acces denied ]
I press yes, and same message but instead BCD, it changes it to system, software, default, security, sam, ntuser.dat and UsrClass.dat.
and then it appears "OK your backup is done"
now i'll try to run OTL, first fix , then scan.
thank you.