ok thank's!
I'll try this when it's fully synced again.
Now Iv'e another problem, the syncing blockchain stop at a block. (sometimes with somes wallet)
in debug file, I can see timeout connection when seeding peers.
How to zap timeout peers (bad peers)?
Must I still wait QT find good peers to continue download entire blockchain?
Why syncing stop with somes QT? how to solve it?
I am pretty sure that Bitcoin Core will automatically block bad peers, but you can still go to Help->Debug window->Peers and click on various peers to see more info or right click on them to show you more options, like disconnecting from them or blocking them.
Syncing should be an automatic process where you can just leave your PC running. Perhaps you are having some network connection issues.
Check your Internet connection and your firewall if you are using Windows (you shouldn't).