wp-admin blank

Hey,

my domain.com/wp-admin suddenly turned blank. i also cannot not reach domain.com/wp-login

domain.com/wp-login.php works but after entering login information the screen turns blank again

I tried all recommendations regarding deactivating plugins or themes but nothing helped. I asked my provider and he said that there is a script error with wp-amin. He told me to check the logs but I cant figure it out.

Can you help me? Here are the logs

178.190.150.84 – – [04/Mar/2015:13:27:38 +0100] “POST /wp-admin/admin-ajax.php HTTP/1.1” 200 57 “http://kpoe-bildungsverein.at/wp-admin/edit.php?post_type=ajde_events” “Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:36.0) Gecko/20100101 Firefox/36.0” “kpoe-bildungsverein.at”
178.190.150.84 – – [04/Mar/2015:13:27:53 +0100] “POST /wp-admin/admin-ajax.php HTTP/1.1” 200 57 “http://kpoe-bildungsverein.at/wp-admin/edit.php?post_type=ajde_events” “Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:36.0) Gecko/20100101 Firefox/36.0” “kpoe-bildungsverein.at”
178.190.150.84 – – [04/Mar/2015:13:28:08 +0100] “POST /wp-admin/admin-ajax.php HTTP/1.1” 200 57 “http://kpoe-bildungsverein.at/wp-admin/edit.php?post_type=ajde_events” “Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:36.0) Gecko/20100101 Firefox/36.0” “kpoe-bildungsverein.at”
80.110.205.135 – – [04/Mar/2015:13:28:19 +0100] “GET /wp-admin/ HTTP/1.1” 200 3 “-” “Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.115 Safari/537.36” “kpoe-bildungsverein.at”
178.190.150.84 – – [04/Mar/2015:13:28:22 +0100] “POST /wp-admin/admin-ajax.php HTTP/1.1” 200 48 “http://www.volkshaus-graz.at/wp-admin/post.php?post=824&action=edit&message=1” “Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:36.0) Gecko/20100101 Firefox/36.0” “www.volkshaus-graz.at”
178.190.150.84 – – [04/Mar/2015:13:28:23 +0100] “POST /wp-admin/admin-ajax.php HTTP/1.1” 200 57 “http://kpoe-bildungsverein.at/wp-admin/edit.php?post_type=ajde_events” “Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:36.0) Gecko/20100101 Firefox/36.0” “kpoe-bildungsverein.at”
178.190.150.84 – – [04/Mar/2015:13:28:38 +0100] “POST /wp-admin/admin-ajax.php HTTP/1.1” 200 57 “http://kpoe-bildungsverein.at/wp-admin/edit.php?post_type=ajde_events” “Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:36.0) Gecko/20100101 Firefox/36.0” “kpoe-bildungsverein.at”
178.190.150.84 – – [04/Mar/2015:13:28:53 +0100] “POST /wp-admin/admin-ajax.php HTTP/1.1” 200 57 “http://kpoe-bildungsverein.at/wp-admin/edit.php?post_type=ajde_events” “Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:36.0) Gecko/20100101 Firefox/36.0” “kpoe-bildungsverein.at”
178.190.150.84 – – [04/Mar/2015:13:29:08 +0100] “POST /wp-admin/admin-ajax.php HTTP/1.1” 200 57 “http://kpoe-bildungsverein.at/wp-admin/edit.php?post_type=ajde_events” “Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:36.0) Gecko/20100101 Firefox/36.0” “kpoe-bildungsverein.at”
178.190.150.84 – – [04/Mar/2015:13:29:23 +0100] “POST /wp-admin/admin-ajax.php HTTP/1.1” 200 57 “http://kpoe-bildungsverein.at/wp-admin/edit.php?post_type=ajde_events” “Mozilla/5

thanks a lot