wp-admin 404 not found

Hello,

I haven’t made any changes to my website lately, and I didn’t make any changes to the code the last time I used it, just editing posts. And when I try to login now, it says ‘ Page not found’. Wp-admin folder is intact, but if I try to access any of the php files in chrome it says the same thing. I can access images though when I type the path.

Also, when I try to access my blog through wordpress.com, I get the message “This site cannot be accessed” followed by a link “disconnect site”. What’s gone wrong, and what can I do? Please help!

Tia,
Ashwita