Before diving into the drivers, let's take a look at the specifications of the Fujitsu Lifebook E736:

Fujitsu provides a (DSDU).

Alternatively, you can also use the following methods to download and install drivers:

To avoid conflicts, install in this order:

is highly recommended over third-party "driver scanners" to avoid malware and ensure you get the exact manufacturer-validated files. finding the direct link

When to use Windows Update vs. OEM drivers