New Laptop Fault

Good Morning, I have just purchased this new Dell Laptop and I am disappointed and need some help please. This is a new computer and since the purchase date when I switch on my computer after a few seconds I get a completely white screen, I go to "Ctrl, Alt, and Delete" and it appears to be a new update from Dell which is at fault, my screen, like I said goes white. So I have to go and delete the program, can some one please help or suggest a way of stopping this happening. It happens every time I switch the laptop on, please advise, thank you.