I have tried to make firefox my default browser at least 6 times today

and every time I go to the box , 'make firefox your default browser' I get bombarded by at least 15 different popups , downloads start by them selves , my AGV is having a hernia trying to stop the flood of spam , man its like the bad old days

,,, a free for all until I disconnect from the net .
You al know the type ,, your computer is running slow ,,, running scan you have 4897654 known problems , go away !!! heaps of spam!!!! .
I have spent hours uninstalling about 70 things that 'FIREFOX !!!! ' deposited into my computer ,, all today 8/5/2014 ,, total carp , its BS .
The only reason I want firefox is that it downloads the large photos on IIS where as IE stopped doing that a while ago for no reason ,,, computers grrrr.
Help and thanks in advance .
Brian.