system
29
There was probably some malware that hijacks your browsers.
Export your bookmarks
https://support.google.com/chrome/answer/96816?hl=en
Close all Chrome windows and tabs.
Go to the Start menu > Control Panel.
Click Programs and Features.
Double-click Google Chrome.
Click Uninstall from the confirmation dialog. Delete your user profile information, like your browser preferences, bookmarks, and history, select the “Also delete your browsing data” checkbox.
Click Start, copy in search [B]%LOCALAPPDATA%[/B] and remove folder Google
Download Chrome
https://www.google.com/intl/en/chrome/browser/desktop/
Install Adblock Plus
https://adblockplus.org/