SVGA is a standard for delivering analog video between devices, such as a computer and a monitor. VGA connections typically use a 15-pin trapezoidal connector with three rows of five pins. VGA connectors are usually colored blue. If your screen is not displaying any video or is not being displayed how it should, you may have a damaged VGA cable. By troubleshooting which aspects of your computer’s display system are working and which are not, you can determine if your VGA cable is damaged and needs to be replaced.
Instructions 1. Verify that the computer powers on and completes a Power On Self Test. This is usually accompanied by a beep or other sound within a few seconds of turning the computer on. If the computer does not complete the POST, the issue is with the computer and not the VGA cable.
2. Connect to an alternative video source with the same VGA cable, such as a different monitor or a flat screen television. If the second device displays an image using the cable, the issue is with the original display device.
3. Physically inspect the cable for damage. If any portion of the cable is frayed, or if any of the pins are bent or misaligned, the cable may be damaged, and it may sustain more damage with continued use.
5. Switch to a new VGA cable if the screen is displaying distorted or altered colors. If the new cable alleviates the issue, the original VGA cable is bad. If the issue persists, the problem lies with either the display device, such as a monitor, or the output device, such as the video card on the computer.
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