helperamc

I'm afraid we don't know either. The heading for this post seems divorced from the content; I can find nothing in Google which links with that heading except for an obscure Chinese link and a reference to psoriasis.

If you still have a page showing, could you try to Force Quit it.

Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.

(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive & clear caches.)

Any change on regular boot then?

Any update on solving this problem? I'm having the same issue. Same operating system. Seems I can only run in safe boot now.

helperamc is part of Advanced Mac Cleaner, a known scumware application: http://applerepairneworleans.com/faq.html
It should be removed.

Thanks Rick, I didn't catch that!

what is advanced mac cleaner

how do i get rid of the advanced mac cleaner in my i-mac

Did you see the last pot by Thomas at the link I posted above?

Thanks BDAqua! That did the trick!

Great to hear, thanks! 🙂