Please Help - Site will not Load

[Quantum]

My site was working fine until today, i was editing the site and now ; www.domain.com will not load unless i use

www.domain.com/index.php

This happen today, so now the only way to open the site is www.domain.index.php and not www.domain.com

How can i fix this problem......?

Thanks for your help.

[Quantum]

Never mind people................i got it figured out and solved......... thanks for looking anyway