Used to connect.....not sure what happened.  But just no connectin at all anymore, no matter how long I leave the wallet open.    So I deleted this installation, delete from appdata\roaming, (kept the wallet.dat, of course), downloaded from the site, installed the new wallet, put the original wallet.dat into the appdata\roaming folder and ......nothing, no connection at all.  Can someone provide any ideas please?  I just mined a bunch of coins so would love to get them to the wallet. 

Thank you so very much in advance!