Connection reset by peer

Have you talked to your host? Ask for server logs.

First i would like to thank you for your help.

i did asked for the error logs and i get the following:

[Mon Jan 13 11:34:40 2014] [10701987] [fcgid:warn] (104)Connection reset by peer: [client 213.175.171.117:52428] mod_fcgid: error reading data from FastCGI server, referer https://cficonsult.com/wp-login.php
[Mon Jan 13 11:34:40 2014] [10701987] [fcgid:warn] (104)Connection reset by peer: [client 213.175.171.117:52428] mod_fcgid: ap_pass_brigade failed in handle_request_ipc function, referer https://cficonsult.com/wp-login.php
[Mon Jan 13 11:53:32 2014] [10701987] [fcgid:warn] (104)Connection reset by peer: [client 213.175.171.117:56599] mod_fcgid: error reading data from FastCGI server, referer https://cficonsult.com/wp-admin/options-general.php?page=wpsupercache&tab=settings
[Mon Jan 13 11:53:32 2014] [10701987] [core:error] [client 213.175.171.117:56599] End of script output before headers: admin-ajax.php, referer https://cficonsult.com/wp-admin/options-general.php?page=wpsupercache&tab=settings

Is your host GoDaddy?

Have you tried:
– deactivating all plugins (yes, all) to see if this resolves the problem. If this works, re-activate the plugins one by one until you find the problematic plugin(s). Don’t forget the ones in mu-plugins if you have that folder. If you can’t get into your admin dashboard, try resetting the plugins folder by FTP or PhpMyAdmin. Sometimes, an apparently inactive plugin can still cause problems.
– switching to the Twenty Fourteen theme to rule out any theme-specific problems.