I downloaded some free software. I needed a pdf editor and for a one use only, there is no way I am paying $$$$$$$ to Adobe just to fiddle about with one pdf file. Anyway, the editor worked fine, except that these people (who I think were born out of wedlock) added a nice bit of software called searchsafer (it will also rename itself Chatzum) >:(

Firstly I went to Control panel and removed the basic program Chatzum (mine had self renamed). This gets rid of the basic program, but still leaves hidden bits. Now go to Firefox Extensions and remove the extension searchsafer (or chatzum, what ever is listed). After this I ran Firefox as normal. The searchsafer search bar was gone, but each time I opened a new tab, the new tab was opened with searchsafer. So after that I ran some malware software. I used malwarebytes-anti-malware. It is free and they do not sting you with a "to remove the problems you now need to subscribe/buy our software" as most seem to. This will find a couple of hidden entries. I removed them, and went back to Firefox. Still the same tab problem. Finally I you need to go to Firefox "about:config" Right click and then reset this entry "browser.newtab". Once you have reset it, right click and select "modify". You can then enter what ever search engine you want to open up when you open a new tab. I entered google.com To get this far was a day and an evening of putting my hair out and using some choice wordage.