Unlike modern Intel Core chips (Sandy Bridge and later), the E5400 requires a separate graphics solution:
Go to the AMD Drivers and Support page to grab the Catalyst or Adrenalin software matching your card. Step-by-Step Installation Guide pentium-r- dual-core cpu e5400 graphics drivers
While the E5400 is a dual-core chip capable of basic web browsing, word processing, and light media consumption, its performance is highly bottlenecked by older graphics architectures. To extend the life of your machine: Unlike modern Intel Core chips (Sandy Bridge and
Do not look for Intel drivers if you use a dedicated video card. Instead, download software straight from the card manufacturer: Lenovo) for the original drivers.
Intel and Microsoft have officially ended support for the GMA 4500 series on modern Windows versions. In most cases, Windows 10 will automatically install a "Microsoft Basic Display Adapter" driver, which works for desktop browsing but disables hardware acceleration.
Check the website of your computer manufacturer (e.g., Dell, HP, Lenovo) for the original drivers.