The present invention is to provide a TV image conversion device for turning a computer on or off by means of a multimedia remote control. The TV image conversion device is electrically coupled to a computer enabling a user to operate a computer on-off switch on the multimedia remote control to turn the computer on or off wirelessly rather than walk to a computer to either turn the computer on or off by pressing an on/off switch on the computer. By utilizing this, the above drawback of incapable of turning a computer on or off by means of a remote control as experienced by the prior art can be overcome.