Salut,
Ceci est un membre officiel de l'équipe de soutien Searchqu. Je suis là pour vous aider
Excusez-moi, mon français n'est pas si bon, si je vais vous expliquer en anglais:
When you downloaded and installed a free application, Searchqu was offered to you by one of our partners that develop free PC applications. During the installation you accepted the homepage changes. There's no need to worry - this isn't a virus, nor malware
In general, there should be no problem manually removing Searchqu's definitions on your computer.
Please try to elaborate on the problem - what exactly is configured as "Searchqu" on your computer and cannot be removed (is it the homepage, for example), and I'll provide you with quick & easy guides to solve the problem.
Merci et bonne année,
the Searchqu Team.