UPDATE: Since my solution was not a good solution, I reinstalled and kept looking for the problem
@DjWelitu: Do you use Bullguard as a Firewall?
if yes there latest version has a new Firewall Engine, being a layer over the Windows Firewall.
When I added httpd.exe and mysqld.exe to the allowed programs of Windows Firewall, Wamp worked again no changes to the original installation
Forum:
WampServer English