Abstract: A method for recovering a basic input/output system (BIOS) memory circuit in a computer system is disclosed. The method includes steps of providing a memory device comprising a first basic input/output system memory circuit and a second basic input/output system memory circuit, the first basic input/output system memory circuit and the second basic input/output system memory circuit respectively having a first computer program and a second computer program stored therein, wherein the first basic input/output system memory circuit and the second basic input/output system memory circuit are employed to initiate an operation of the computer system, enabling the second basic input/output system memory circuit upon booting the computer system, detecting if the first computer program includes an error, and re-programming the first basic input/output system memory circuit based on the second computer program when the error is detected in the first computer program.

Abstract: An over temperature protection method and its circuital device for a central processing unit includes a read and write memory unit having pre-stored therein; an instruction for identifying a type of CPU and automatically predetermining the maximum allowable over temperature for the CPU. An over temperature is detected by a heat sensitive resistance installed at the space immediately under the CPU to cause an audio frequency alarm circuit to output a sound alarm and also cause the CPU to slow down its operation speed to an appropriate reduced rate to prevent CPU from being damaged by over heat or other loss caused by interrupting CPU operation. After recovery of temperature to a normal value, the CPU can be instructed to operate with its normal speed.