As with installing any low-level software, it is advisable to create a backup beforehand, so that you can roll back, should something not work as planned.The most important driver upgrade IMO is graphics drivers.
The damage to the speakers appears to be permanent once it occurs, requiring users to contact Apple to exchange their new Mac Book Pro for a replacement unit.
Now, i did the same thing: i updated from Windows 8 to Windows 10 and i didn't need to update any drivers whatsoever.
I had my Windows 8 installed with Boot Camp Drivers (but i didn't had the whole partition thingy because I installed Windows on an external hard drive) and i was able to upgrade to Windows 10 without touching the drivers at all.
If you've followed our guide to install Windows 10 on a Mac then you probably opted for the Boot Camp option.
While it hasn't been officially supported, Apple is updating its Boot Camp tool this week to provide Windows 10 support for 64-bit Macs.It was really nice and straightforward, just like I was running a proper Windows PC.