Patent ID: 8745619

Claim:
A computer system having a virtual computer management mechanism realizing a virtual computer, the computer system comprising: a user virtual computer that communicates with a device via a virtual computer for a device driver under a control of the virtual computer management mechanism; an input receiving unit that receives a signal of an input operation from the device; a reset level determination unit that determines a reset level based on the received signal of the input operation; a reset target specifying unit that specifies a virtual computer to be a target of a reset process based on the determined reset level; and a reset signal transmission unit that transmits a reset signal to perform the reset process on the specified virtual computer, wherein the reset level is determined from among a plurality of reset levels, each reset level indicating a different number of virtual computers on which the reset process is to be performed, and the plurality of reset levels are contained in a reset management table of the computer system, the reset management table including arrangement information of data indicating virtual computers on which the reset process is to be performed.