What should be considered during video card installation and connection to video equipment?

Make sure that video card is secured to the case with a screw, set tightly in the slot and did not slide out of it after connection of input and output cables.

All audio and video devices connected to the computer that have a similar impulse power supply with grounding outlet (and only these devices) MUST be joined to the computer case with a separate cable. Do not switch cables while the computer is operating or is connected to a network.