In dual boot, both systems are separated, so you need to install drivers in both systems - especially that windows drivers and elementary drivers are different.
If you say that you used elementary before and had no drivers then tell us what was missing. Because some drivers come with the system, but some of them you need to install manually (usually by adding packages with a lot of drivers to your computer [as I remember I had to install package for DVD player in my computer]).
However, sometimes you need to download packages from producer's website (for example not common brands of printers requires this) and usually they have drivers for linux.
In the worst of the worst situation you may not be able to install drivers, because there are only windows or OSX drivers. (In my whole life I had this situation only one time when I bought a new laptop 2in1 and there were no soundcard drivers for it [it was too new ;) ]. But some people reported that and after a while these drivers existed for linux :) )
If you are affraid that you'll have to install drivers for every small thing in your computer -wifi, sound, usb, hdmi etc. then you'll not :D [as soon as you don't have some bizzare computer from China or something]. I think that 99.9% of drivers for these most common brands exist and if not then it'll probably exist soon.
So don't worry and go for elementary!
If you'll have any problem, we're here to help you :)