Apparatus, systems, and methods may operate to receive a signal that enables execution of instructions forming a memory clear process, wherein the instructions are included in an operating system of a wagering game machine. Additional activities may include executing the instructions by at least one processor to clear at least a portion of nonvolatile memory in the wagering game machine and initializing the operating system to enable receiving a wager from a player in association with a wagering game to be played on the wagering game machine. Additional apparatus, systems, and methods are disclosed.