Have you tried updating the actual laptop, Windows? If its a completely different update and not compatible with the actual laptop then it might not work, if its not a Windows and its a Samsung instead, might have to try restarting the laptop itself, see if that'll work. If not then I'm afraid I can't help mate because I've not got these types of laptops, hope I could help.
In WINDOWS UPDATE itself, there is an option (about mid-window) to scan the windows update for any issues that prevents proper update. Run it, then when it has finished, restart the laptop, then try running WU again