Thank you. A LOT!!!
I had problem with samba, i could access/read folders, but when i tried to copy stuff (music or videos) the transfer works a few seconds then drop down, and the nas is no more available on the network... had to reboot manually...
I have searched for 2 weeks, rescan all my parameters, everything was ok !
I have recently changed my configuration to something more economic ( z97n wifi +g3420 to am1b itx+ 5350 athlon ) and my computer has migrated from seven to 10, and since i was on W10, coying wasn't working. Until i read your post.
Will all my gratitude, from France.