Troubleshooting A Bad Video CardIf you power on the computer and there is no video, take notice of any unusual beeping from the computer. Depending on your BIOS manufacturer, you will hear a string of beep codes to indicate a video adapter failure, such as one long and two short beeps. If you hear any unusual beeping, look on the motherboard and find the BIOS manufacturer’s name on the BIOS chip. You can then refer to a BIOS beep code chart to determine the affected hardware.
If you see artifacts on your screen or other types of pixelation, your graphics card is probably going bad. Try re-seating the card and check the video card’s fan to make sure it is spinning fast and is clear of dust and other debris.