Can't access login, says "connection was reset"

I can access my site (the public side), but I can’t access my dashboard (/wp-login). It returns “The connection to the server was reset while the page was loading.” on Firefox and similar messages on Chrome and IE10. My site is https://www.pmirope.com.

I know this has come up in many different threads, but I’ve tried all the fixes I could find to no avail.

Here’s what I’ve tried so far:

• Cleared my browser’s cache
• Tried it on different computers
• Changed the name of the Plugins folder via FTP

• I do get an error for one of my Plugins when I turn on “ini_set (‘display_errors’, 1);”. I deleted that Plugin via FTP. No more erros and still can’t login.

• Uploaded all new WP files (except for wp-content)
• Tried renaming my theme to force it to use twentytwelve, but that doesn’t work. It just returns a blank page for my site when I do that
• Contacted my host and they said they saw an error saying “Fatal error: Cannot redeclare class WP_Embed in /hsphere/local/home/iminthezone/pmirope.com/wp-includes/media.php on line 104” but I can’t reproduce that error and I don’t know what to do to fix it (other than what I’ve already tried above).

I’m at a total loss for what to do next. PLEASE help!

Thanks in advance!!