How to handle the video card is incompatible with the motherboard

If the graphics card production process is not standardized, resulting in the plug into the AGP slot, a short circuit, the performance of this time is not to add electricity. If the graphics card work sometimes normal, and sometimes there is no regular point does not light the display, but the video card inserted in the other motherboard is completely normal. At this point the phenomenon will only be able to change the video card. Computer host and monitor are normal, that is, occasionally there is no regular image Huati and so on, the general appearance of such a situation. is also the video card is incompatible with the motherboard, change the motherboard or graphics card.