WampServer

I have tried to upgrade phpMyAdmin from 3.5.1 to 3.5.2.1. It took a while but after some tries it worked.
Then I tried to upgrade to 3.5.2.2 but it didn't work
I got back to 3.5.1 .
To do so I copy the folder into C:\wamp\apps,
then I change C:\wamp\alias\phpmyadmin.conf

But I can't get it up back to work.
My WAMP is GREEN.
[localhost] WORKS PERFECTLY AND SHOWS the configuration I write downwards
I'm working on Drupal
My Database name is DRUPAL
Nom d’utilisateur : root
Mot de passe : vide

phpMyadmin says: Forbidden
You don't have permission to access /phpmyadmin/ on this server.
when I try to access my site LOCALY

Drupal says:
Uncaught exception thrown in shutdown function.

PDOException: SQLSTATE[42S02]: Base table or view not found: 1146 Table 'drupal.semaphore' doesn't exist: DELETE FROM {semaphore} WHERE (value = :db_condition_placeholder_0) ; Array ( [:db_condition_placeholder_0] => 101883689550332dd2639233.71184781 ) in lock_release_all() (line 269 of C:\wamp\www\drupal-7.14\includes\lock.inc).

mySQL log says
120820 14:04:10 [ERROR] Cannot find or open table drupal/semaphore from
the internal data dictionary of InnoDB though the .frm file for the
table exists. Maybe you have deleted and recreated InnoDB data
files but have forgotten to delete the corresponding .frm files
of InnoDB tables, or you have moved .frm files to another database?
or, the table contains indexes that this version of the engine
doesn't support.
See [dev.mysql.com]
how you can resolve the problem.

Ma config est
Version de Apache: 2.2.22
Version de PHP: 5.3.13
drupal-7.14
drupal-7.15
Version de MySQL: 5.5.24

Alias
• 120819 02 phpmyadmin
• Copie 120819 de phpmyadmin
• phpmyadmin
• sqlbuddy
• webgrind

I'm new to database
I've been around te web looking for answers and this forum was the best.
Thank you very much for your time and help.
Please tell me if I rather should write in French.