Most N455 systems use the Intel NM10 Express Chipset . You typically need the Intel Chipset Device Software (INF Utility) to ensure the motherboard components are recognized correctly by the OS.
The Atom N455 belongs to the family. Because it integrates the memory controller and the graphics engine (Intel GMA 3150) directly onto the chip, your system performance depends heavily on the "Intel Graphics Media Accelerator" driver. Without the correct version, you’ll experience: Slow window dragging and UI lag. Inability to adjust screen brightness. Limited resolution options. Poor video playback performance. Where to Find the Drivers intel r atom tm cpu n455 - 1.66ghz drivers