Microsoft says that Service Pack 2 may not work with computers running AMD’s 64-bit chips include the Athlon 64 and Opteron. AMD believes the problem has only occurred, so far, with one application, Sigma Designs’ Realmagic Hollywood Plus DVD Decoder. PCs with 64-bit AMD processors may restart repeatedly after installing Service Pack 2, if those machines are also configured to enforce so-called data execution prevention (DEP) and contain hardware that requires a driver software known as Mpegport.sys. Sigma Designs’ Realmagic Hollywood Plus DVD decoder application is one such application that uses the driver. Microsoft says users may be able to resolve the problem by configuring a so-called DEP exception. AMD also recommends that people affected by the problem do so. Otherwise, Microsoft advises AMD users to remove SP2 altogether.

Microsoft says that Service Pack 2 may not work with computers running AMD’s 64-bit chips include the Athlon 64 and Opteron. AMD believes the problem has only occurred, so far, with one application, Sigma Designs’ Realmagic Hollywood Plus DVD Decoder. PCs with 64-bit AMD processors may restart repeatedly after installing Service Pack 2, if those machines are also configured to enforce so-called data execution prevention (DEP) and contain hardware that requires a driver software known as Mpegport.sys. Sigma Designs’ Realmagic Hollywood Plus DVD decoder application is one such application that uses the driver. Microsoft says users may be able to resolve the problem by configuring a so-called DEP exception. AMD also recommends that people affected by the problem do so. Otherwise, Microsoft advises AMD users to remove SP2 altogether.