Ok it wont let me says i need to enter a serial number and unlock key.. what the hell!?

Edit : Ok, i just clicked cancel and it took me straight to the program, now i have 3 different options, smart scan, full scan or custom scan which one do i do?

Second Edit : Ok, i just clicked full scan it seemed to make the most sense.
cannabis campbell Reviewed by cannabis campbell on . Laptop problems Well at the moment i only have a laptop and its only a 30GB one has i haven't bought an external hard drive for it yet. I have a problem with it, whenever i am say for example watching a video on youtube or on here, and have windows media player open or something it would just crash.. just freeze the screen would just freeze and stay the same but have weird blue lines going down it sometimes as if it were a crappy quality picture.. I have no idea why this is happening could this be Rating: 5