There's a simple way to remove Fake AV programs but it takes some timing
Here's a simple (or not) guide for you...
1, Turn off then boot the machine
2, The instant you see the desktop appear, right-click the Taskbar and select Task Manager
It is imperative that you're quick, most (if not all) Fake AV will disable the Task Manager as soon as it's loaded into memory
3, In Task Manager, processes tab, right-click any suspect entry and select 'End Process Tree'
The processes to End will no doubt be associated with 'Antimalware Go'
Now that the process has been killed you will need to get yourself back online...
Open up Control Panel > Network and Internet > Internet Options
and select the 'Connections
' tab, then click 'Lan Settings
' as indicated below
Make sure that the 'Use a proxy server for your LAN
' is unchecked as indicated below
You should then be able to systematically and manually remove the files associated with Antimalware Go. These will likely be... File Locations
Program files\Antimalware Go Registry Locations
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\PhishingFilter “Enabled” = “0?
[random] means that it'll no doubt be a completely random selection of letters & numbers
After all this, download MalwareBytes
and run a full system scan then reboot your machine.
Hope this helps.