Astromenda is usually tagged onto another download. My first suggestion would be to download Revo uninstaller portable and show us a list of programs installed on the computer so we can remove the program(s) that originally brought it onto your computer.

We need to know what programs are installed. You should be able to export a list from Revo or take screenshots to show all the programs.

dandl said

Dave, from what I can read on this subject and since he has already ran Malwarebytes and AdwCleaner. He will have to use the Chrome Tools/Extension Tab and delete unwanted extensions and reset Google Search as the default search engine from the settings tab and be sure and clear history.

I just wanted to make sure we got it all, dandl. No sense treating the symptoms if the root cause is still lurking around.

You need to post jpg or png files and the smaller the filesize the better - as long as they are legible. You can try uploading to http://webresizer.com/ to make the filesize reasonable.