hello, this sounds like a problem possibly caused by adware on your pc.

1. please go to the firefox menu ≡ > addons > extensions & remove any suspicious entries (toolbars, things that you have not installed intentionally, don't know what purpose they serve, etc).
2. also go to the windows control panel / programs and remove all toolbars or potentially unwanted software from there.
3. finally, run a full scan of your system with different security tools like the free version of malwarebytes & adwcleaner, which are specialised in adware and browser hijackers.

Remove a toolbar that has taken over your Firefox search or home page Troubleshoot Firefox issues caused by malware

Found this on a web search

How to Remove MapsGalaxy Virus for Good – Manual http://blog.teesupport.com/how-to-remove-mapsgalaxy-virus-for-good-manual-removal/

The first paragraph "#please go to the firefox menu ≡ > addons > extensions & remove ..." seems to have solved the problem. The second para: I could not find any suspicious software. Third para: I will run malwarebytes. Thanks George

philipp said

hello, this sounds like a problem possibly caused by adware on your pc.

1. please go to the firefox menu ≡ > addons > extensions & remove any suspicious entries (toolbars, things that you have not installed intentionally, don't know what purpose they serve, etc).
2. also go to the windows control panel / programs and remove all toolbars or potentially unwanted software from there.
3. finally, run a full scan of your system with different security tools like the free version of malwarebytes & adwcleaner, which are specialised in adware and browser hijackers.

Remove a toolbar that has taken over your Firefox search or home page Troubleshoot Firefox issues caused by malware

I can't find the menu bar

Press the Alt or F10 key bring up the tool bar

I got it. Thanks