A computer device, a server device, and a method for controlling a hybrid memory unit thereof are provided. The control method includes: executing, by a processing unit, an operating system (OS) in a working mode of the computer device; triggering, by a soft off control signal or a soft reset control signal when the processing unit executes the OS, the processing unit to enter an interrupt processing mode; executing, by the processing unit, basic input/output system (BIOS) program code in the interrupt processing mode; and controlling, by the processing unit by using the BIOS program code, to store data from a volatile memory into a non-volatile memory corresponding to the volatile memory.