New motherboard, need files from the hard drive

I just got my computer back with it's new motherboard, but I need to get files from the hard drive before reinstalling windows.
I'm quite the newb, but what I understand is that this new motherboard got no drivers and that's why no mouse or keyboard I own works. To get the drivers you need to reinstall windows, which will wipe the hard drive(?)

So I'm wondering if there's any way for me to get access to these files, perhaps by installing drivers only for the mouse and/or keyboard without having to completely reinstall everything?

Thanks