The Intel Pentium E5400 does not have a built-in graphics card (iGPU). It requires a separate, dedicated graphics card (from AMD, NVIDIA, or older Intel discrete GPUs) connected to the motherboard to display anything on a monitor.
This guide explains how to identify and download the correct driver for your actual graphics hardware. Since the E5400 has no integrated graphics, you need to find out which dedicated GPU is installed.
There is no such thing as "Intel Pentium E5400 graphics drivers" – the CPU itself has no graphics. You must always download drivers for your separate graphics card .