After I attempt to send a HTTP request like

GET / I can not achieve to index.html or index.php. The host brings the page /cgi-sys/defaultwebpage.cgi.

After I try GET /index.html This time around i recieve a 404 not found error. It states (none)/index.html not found.

What is the main reason?

There's no index.html within the web root. The server continues to be set up to redirect demands for / to /cgi-sys/defaultwebpage.cgi rather, and you ought to recognition that.

Appears like that DocumentRoot within the httpd.conf file is pointing to another directory rather than where your index.html is.

If you work with apache, see if you place your DirectoryIndex value in httpd.conf correct. For instance:

DirectoryIndex index.html