Windows Update now delivers many critical drivers — especially for network, audio, and storage controllers.

Pros: Zero cost, safe, integrated.
Cons: Not all drivers are updated; sometimes behind latest versions.

For critical drivers (graphics, chipset, Wi-Fi), go directly to:

Pros: Most reliable, latest drivers.
Cons: Time-consuming for multiple devices.

SDIO is an open-source, completely free driver pack tool. It downloads driver packs (large, several GB) and lets you update offline.
Caution: Very powerful, not recommended for beginners. Always create a system restore point first.

Some driver tools have generous free versions:

None are perfect, but they are safer than cracked EaseUS keys.