Computer help it is urgent?

Hi recently my computer has not been workuing I turn it on then all this info comes up I have to wait about 20 mins for it to finmish and for it to show the users page. When I click on my user icon it logs on. But thenm when it goes to my desktop I cant work and the computer does absolutely nothing. I did recentely dowload some free games from funpcgames.com and Im wondering if thats the problem. I will get in trouble if thaats the problem and my mum sees that thats wats making it funny how do I get rid of them and how do I stop the problem of the pc. UI have windows xp