All menus from back-end disappeared!

[Paul Sarstiuc]

Hello everyone,
It seems that I have a little-big problem: All the menus and sub-menus from backend (Administration panel) disappeared as you can see in the picture attached below:
http://www.piesemoto.co/magazin.png

Who can tell me what do I have to do next without removing the products that I allready have in store? (The store is fine, just the back-end is messed-up)...

Thank you,
Paul.

[jhnstcks]

Did you alter any of the files when this happened? or installed any new modules?

[Paul Sarstiuc]

Nope, I did not touch it in the last 2 weeks.
What/How should I check/verify for any possible issues?

I do not know if this is connected, but I have installed on the same hosting server a new website using prestashop again. I used the same database but with different prefix.
(And after I installed it I was able to work in the back-end with both of them..)

[Paul Sarstiuc]

I just verified the database and al the products are still there. Now I see on the website all the test is missing. so I think in the connection with the database that is lost.
How can I restore it? where can I verif/set the connection back?

Thank you,
Paul.

PS: A link to a product that is not working anymore:
http://piesemoto.co/product.php?id_product=11'>http://piesemoto.co/product.php?id_product=11
Or click here and look at the "Feature Products, on the bottom of the page:
http://piesemoto.co/