Port 80 utilisé par "a processus with PID = 4" (Pas de réponses)

Bonjour,
J'ai installé Wampserver sur un de mes ordinateurs et l'icone wamp reste orange.
J'ai testé le port 80 et wamp m'indique

Test for TCP
Your port 80 is used by a processus with PID = 4
The processus of PID 4 is 'System' Session: Services
The service of PID 4 for 'System' is 'N/A'
*** ERROR *** This service IS NOT from Wampserver - Should be: 'wampapache'

Test for TCPv6
Your port 80 is used by a processus with PID = 4
The processus of PID 4 is 'System' Session: Services
The service of PID 4 for 'System' is 'N/A'
*** ERROR *** This service IS NOT from Wampserver - Should be: 'wampapache'

Quel est ce programme ? Comment le désactiver ?
_________________________________________________________
Edition de windows : Windows 10
Version de Wamp utilisée : 3.0.4 (32 bits)
Système d'exploitation : 32 bits
Contenu de "C:\wamp\bin\apache\apache2.4.18\conf\extra\httpd-vhost.conf" :

<VirtualHost *:80>
	ServerName localhost
	DocumentRoot c:/wamp/www
	<Directory  "c:/wamp/www/">
		Options +Indexes +FollowSymLinks +MultiViews
		AllowOverride All
		Require local
	</Directory>
</VirtualHost>

<VirtualHost *:80>
	ServerName Transload
	DocumentRoot c:/wamp/www/transload
	<Directory  "c:/wamp/www/transload/">
		Options Indexes FollowSymLinks MultiViews
		AllowOverride All
		Require local
	</Directory>
</VirtualHost>

Contenu de "C:\Windows\System32\drivers\etc\hosts" :

# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
#      102.54.94.97     rhino.acme.com          # source server
#       38.25.63.10     x.acme.com              # x client host

# localhost name resolution is handled within DNS itself.
#	127.0.0.1       localhost
#	::1             localhost
 
127.0.0.1 genuine.microsoft.com 
127.0.0.1 mpa.one.microsoft.com 
127.0.0.1 sa.windows.com 
127.0.0.1 se.windows.com 
127.0.0.1 ie.search.msn.com 
127.0.0.1 wustat.windows.com 
127.0.0.1 wutrack.windows.com 
127.0.0.1 catalog.microsoft.com 
127.0.0.1 sls.microsoft.com 

127.0.0.1 localhost
::1 localhost
127.0.0.1	Transload
::1	Transload

Codialement, Z fIre