I need to re-set my Dell XPS Laptop, which has a pre-installed Windows 10 on it (I bought the laptop and the retailer put Windows 10 on it, so I don't have a Windows CD or a product key). My understanding is that with a pre-installed Windows 10 I don't need to worry about saving Windows on a USB stick to install it from after reset, and that I don't have or need to enter a product key to make Windows 10 run again after re-set.
Is that correct? I don't want to reset and then find out that I cannot use my computer due to Windows not being ready.
Once I saved all relevant files, can I simply start re-setting my laptop and the pre-installed Windows will be installed automatically?
Thanks!