how to remove

My default search engine is hijacked by Every time I open my Google Chrome, it starts hijacking my browser and redirects me to its website I tried toremove it from the browser address bar by typing another homepage link but still failed. Then I google help, someone recommend me to follow the removal guide in this post to get rid of I’m trying the manual removal steps in that post. I think I have removed the threat. But when I reboot my computer, it comes back again. What should I do? How can I completely eliminate the threat from my web browser? Anyone has the same problem with me? How do you solve your problem?