make a safe copy in a fisical notepad (old school whriting stuff) for passwords etc.

and in another page write all the cookies names and sites related to those cookies

some ways to find about the cookies my implie to use tracerout tools or whois tools

go and delete preferably your browser config files

and before you start again your browser go to your network router and in the firewall settings try to block all the sites or ip related to the cookies that cause trouble