Wp-admin Error 404

Hi,

I got this problem today and I’m not able to fix it.

Before error:

I was writing a blog post…

I’ve read many articles about this problem, but the solutions don’t work.

I’ve renamed the plugins folder, the .htaccess file, I’ve checked the value in chmode and it’s 755. I’ve tried login.php instead for admin/index.php.

The problem is still 404.

Any advice?

Thanks in advance.