Can Avast remove "startpage-home.com" (some kind of browser hijacker virus )

For some reason, this strange “startpage-home.com” is able to hijack my Chrome’s start page once awhile. From Chrome’s settings, I couldn’t find anything like that on my add-on extension, my Chrome’s start page remains the start page I want, and my default search engine remains what I want. I can’t find it from Regiedit either.
Then I used Avast to scan my computer, nothing found. Avast also rates this site as “safe”, but I don’t want this piece of sxxt hijack my browswer. Any idea how I can remove this without buying some malware removal software?

Thanks.

Please post in the correct forum and provide the log files according to the instructions :
https://forum.avast.com/index.php?topic=53253.0