Cannot access the site after changing admin password
The problem was related to one of the two below (or both):


The error from the intel module 
The session cache / cache


Currently the site is live and working great, but the Intel module is active currently  and I don't know if to disable it or not. 

The second thing we did (me and the nice guy that helped me) is to clear the cache and sessions cahce  - which was problematic for me since I did not had access as admin. We used update.php after allowing every user to access it on the setting.php file (changed false to true), and clear the cache through the mysql query on the 'my php admin'.

Here are the steps:


enter my php admin
choose database
go to mysql tab
on the query:
UPDATE system SET status='0' WHERE name='intel';
then need to flash the cache - run the query:


TRUNCATE TABLE sessions; 
TRUNCATE TABLE cache; 
TRUNCATE TABLE cache_bootstrap; 
TRUNCATE TABLE cache_block; 
TRUNCATE TABLE cache_field; 
TRUNCATE TABLE cache_form; 
TRUNCATE TABLE cache_image; 
TRUNCATE TABLE cache_menu; 
TRUNCATE TABLE cache_page; 
TRUNCATE TABLE cache_path; 
TRUNCATE TABLE cache_update; 
TRUNCATE TABLE cache_views; 

I will be happy to get feedback on this solution. The site is currently working - so problem solved.
But, I don't know if I still can't disable the intel module and if I can change the admin password. I don't want to cause the problem again.