IMO it's unwise to overclock anything in a laptop. The cooling in a [gaming] laptop is usually pushing the envelope of what's physically possible, indeed some [gaming] laptop BIOSes deliberately underclock at times to keep things cool.
I agree in general with @ubuysa that most laptops are not built for overclocking , only a very few laptops have the cooling and thickness to sustain it , and these tend to be DTR`s or Desktop Replacement laptops , weighing in at +4kgs . My previous laptop was one of such laptops , but these are being phased out in favor of slimmer and more useable ones. Hence overclocking today is not advisable as cooling is not dimensioned for the heat generated .