Hello, thanks stpvoice, I have been readying along the forum, so: I'll change the chmod of my directories to 755, files are 644 already and check the .htaccess and config.php of joomla, right now I joined to the file manager and edited the config.php to disable SEF.
If it does not works I'll comment RewriteBase / on .htaccess as http://docs.joomla.org/Enabling_Sear...URLs_on_Apache says
Let me try and I'll comment to you what's going on.

---------- Post added at 06:56 PM ---------- Previous post was at 06:19 PM ----------
Checked directories and files
Directories 755 chmod
Files 644 chmod
Config.php from joomla directory:
Code:
var $sef = '1';
var $sef_rewrite = '1';
var $sef_suffix = '0';
.htaccess
Code:
# Uncomment following line if your webserver's URL
# is not directly related to physical file paths.
# Update Your Joomla! Directory (just / for root)
RewriteBase /montessoridelgrijalvatest
########## Begin - Joomla! core SEF Section
#
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
#
# If the requested path and file is not /index.php and the request
# has not already been internally rewritten to the index.php script
RewriteCond %{REQUEST_URI} !^/index\.php
# and the request is for root, or for an extensionless URL, or the
# requested URL ends with one of the listed extensions
RewriteCond %{REQUEST_URI} (/[^.]*|\.(php|html?|feed|pdf|raw))$ [NC]
# and the requested path and file doesn't directly match a physical file
RewriteCond %{REQUEST_FILENAME} !-f
# and the requested path and file doesn't directly match a physical folder
RewriteCond %{REQUEST_FILENAME} !-d
# internally rewrite the request to the index.php script
RewriteRule .* index.php [L]
#
########## End - Joomla! core SEF Section
Still not working, is it not a problem with the php engine on server?
Thanks in advance for your help and attention...
waiting for your replay 
Again, I saw i have seem issue in pages that have small pieces of php code and i think it is also for javascript code from the other directory, only whole html files works, still thinking it is a server trouble XD