Welcome L11t to the windows 7 forums.
Windows 7 comes on a DVD. Are you sure that your samsung has a DVD drive?
Also, It looks like your laptop is not a US product.
More info would be helpful.
Also, press the space bar when it gets just past the bios screen to start from DVD.
And, are you sure that your Windows 7 disk is a MS product that is bootable and not
an upgrade which might not be bootable.?