Been so long since i've used windows but I do remember yahoo clogging my computer up with their rubbish :yellow card
It goes something like this..... click start then run then type in msconfig this should bring up a box with 4? tabs one of which is startup click that and unselect any yahoo thingies there then restart
Just a warning don't unselect anything that you are unsure of only unselect things like yahoo / msn ect
more on msconfig here
https://www.youtube.com/embed/cs5lbavbrzs?feature=oembed
As for startup page on browser goto settings > homepage and change it to http://talk.electricianforum.co.uk/ or http://www.google.co.uk
It goes something like this..... click start then run then type in msconfig this should bring up a box with 4? tabs one of which is startup click that and unselect any yahoo thingies there then restart
Just a warning don't unselect anything that you are unsure of only unselect things like yahoo / msn ect
more on msconfig here
https://www.youtube.com/embed/cs5lbavbrzs?feature=oembed
As for startup page on browser goto settings > homepage and change it to http://talk.electricianforum.co.uk/ or http://www.google.co.uk