Why the server does not load index.php automatically?

[narongsak]

When I access my website forum.narongsak.com why does the server automatically load file index.php? I must type forum.narongsak.com/index.php myself!

More over when I access http://narongsak.com it always show

Great Success !
Apache is working on your cPanel® and WHM™ Server

but when I change to http://www.narongsak.com it show

Welcome to your new x10Hosting.com hosting account. You may replace this index.html with your new website. Please remember the best way to receieve support is through the x10Hosting Forums.

P.S. my original domain name before editing is narongsak.x10hosting.com

 

[Christopher]

Moved to level two support

 

[narongsak]

Does anybody help me for this issue?

 

[Fedlerner]

Your website should now be working, please verify it.

 

[narongsak]

I have check my website, but nothing change. Everything is still the same.
Please help me again.

 

[Fedlerner]

Sorry for the inconvenience, it should now be working.

 

[narongsak]

Now it's working, I can access http://narongsak.com and http://www.narongsak.com properly, website automatically load index.php.

Thank you very much for your help
Edit:
When have check at my workplace, it's OK.
But when I'm go back home, I check it again, it's NOT OK.

Please help me to check it again. Can you access my webpage with this URL properly?

http://narongsak.com
http://www.narongsak.com

 

[narongsak]

I access to my site from my home and found that:
- when access to http://www.narongsak.com is OK (load index.php)
- BUT when access to http://narongsak.com it's still showing
Great Success !
Apache is working on your cPanel® and WHM™ Server

Can you help to fix this for me? Or just give some suggestion to me, I will do it myself to make http://narongsak.com automaticall load index.php

 

[Fedlerner]

When I access it with or without "www." I see your website and not the Apacke page.
Clear your cache and temporary files, and try again.