^ I would temp. install and run Adw-Cleaner.
Did you look at the Task Manager processes running when 'claro' pops up ?
You should be able to see an odd program, find it, and Delete.
is an adware program that has changed your browser home page and default search engine to claro-search.com
. Apart from this unwanted changes, Claro Search has added a useless toolbar on your browser and whenever your are doing a search,it will display on the first search results their own ads.
Claro Search got on your computer after you have installed another program that had bundled in their installer
the Claro Search.
You should always pay attention when installing software because often, a software installer includes optional installs, such as this Claro Search. Be very careful what you agree to install. Always opt for the custom installation and deselect anything that is not familiar, especially optional software that you never wanted to download and install in the first place. It goes without saying that you should not install software that you don’t trust.