Dear Irene;
Thanks for reply;
I didn't use different ones, I just used the same version of office (2010) before; however after installing that, facing with some problem like start-up and config problem, that these was caused to return 2007. but at this version i had the same problem;
almost nothing done even after clean-install of new office, trying to fix and temporary old office files was not useful to pass this problem; Finally by re-installing windows, solve the problem; Thanks for reply again.
Regards