The Pentium R E5400 is a dual-core CPU from Intel's Core 2 Duo family, released in 2009. With a clock speed of 2.7 GHz and 2MB of L2 cache, it's a decent processor for general computing tasks, but it may struggle with demanding games and graphics-intensive applications.
Download from Intel’s download center – search “Intel Graphics Media Accelerator Driver for Windows 7”. pentium-r- dual-core cpu e5400 graphics drivers