There are several methods of watching TV on a computer monitor, from streaming video via the Internet to connecting a TV tuner card to your PC. An external TV-to-PC tuner can turn any spare monitor into a functional TV, without being connected to a computer. Because many cable boxes utilize the High-Bandwidth Digital Content Protection (HDCP) scheme to prevent piracy, your monitor must also be HDCP-compliant to function as a TV monitor. Tips Warnings Writer Bio