Redirect AND password reset issue

I was attempting to resurrect a website.

I use Firefox and when I go to the website I get this error:

“Firefox has detected that the server is redirecting the request for this address in a way that will never complete.”

I have cleared my cache, cleared my cookies, made sure my cookies are enabled, etc… and I still can’t get to the site from any computer (or browser, doesn’t work for IE or Safari, either) I’ve tried.

I can get to the log in page of my site, the https://mysitename.com/wp-admin.

It won’t let me log in, though. I enter my name and password and nothing happens. When I try to have my password reset, again, nothing happens. When I click the “Log In” or “Get New Password” buttons it’s as if the page just refreshes and that’s all. I have changed my password through phpMyAdmin and that didn’t help.

I have also deleted the .htaccess file, all the plug in files, overwrote everything in my directory but the wp-contents folder…

I’m at my wit’s end. What else can I do so I can gain access to my site again?

And, note, I honestly have no idea what my WP version is… The last time I accessed this site was in Jan 2010 so I would have updated to whatever the most recent version was at that time.

Thanks in advance!! ??