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Common device driver compatibility issues include: a 32-bit device driver is required for a 32-bit Windows operating system, and a 64-bit device driver is required for a 64-bit Windows operating system. 64-bit device drivers must be signed by Microsoft, because they run in kernel mode and have unrestricted access to the computer hardware. For ...
Display drivers in Windows Vista and Windows 7 can choose to either adhere to WDDM or to XDDM. [4] With the removal of XDDM from Windows 8, however, WDDM became the only option. [5] WDDM provides the functionality required to render the desktop and applications using Desktop Window Manager, a compositing window manager running on top of Direct3D.
As of January 2011, the model has been made available in Asia. The Asian release of the 1018 features 1GB of DDR3 RAM and is shipped with Windows 7 Starter as well as Office 2010 starter. However the N455 is actually 64-bit and Hyper Threading capable, and thus is actually capable of running 64-bit variants of Windows 7. [citation needed]