Error after delete install.php

Dear Support
I have install wordpress a few weeks ago.. sometimes my blog redierct to wp-admin/install.php, so I deleted install.php but when I open the url it’s say “The webpage at https://www.chanteepps.com/wp-admin/install.php has resulted in too many redirects. Clearing your cookies for this site or allowing third-party cookies may fix the problem. ” . I have clear the cache too”..I have clear the cache but no luck.

Then I upload again the install.php, save on wp-config..when I open my blog it’s looks just https://www.chanteepps.com/wp-admin/install.php.

I open myphpadmin to ensure correct database name but myphpadmin say
“Error

SQL query: Edit

SET CHARACTER SET ‘utf8’;

MySQL said:

#1045 – Access denied for user ‘root’@’localhost’ (using password: NO) “

Please someone help me..what can I do for solve this problem..I was scared.