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Older graphics hardware that does not perform well may have a variety of problems, which can be generally divided into two kinds: bad connections between independent video card and slots, and incompatibility of graphics card and main board.
The loose connection often happens between two places.
First is between the graphics card slot on the main board and the golden finger of the card.
It may result in warning prompt or black screen occurring after boot up. If warning prompt or black screen pops up after boot up, we should firstly check the graphics card slot, for example, removing dust, cleaning the golden finger, checking that whether the card's fixed board is bending, whether the port between golden finger and slot is steady, and whether the screws used to fix video card's board is too loose or too tight. Besides, for the main board with an integrated video card, if black screen or crashes happens, we should also check whether the memory bank is plugged in the first memory slot tagged DIMM 1.
Second is between graphics card port and VGA port of the monitor.
It may result in OSD deviance after startup.
If VGA port is loose connected, there will be color pure missing, color shift, tearing or even due on "No Video In" on the screen. Once we eliminate monitor's problems, we should check the connection of cables and whether the VGA pin is good-working.
Incompatibility problems between display card and mainboard could happen in software or hardware.
The main feature of the software incompatibility is display deviance or words and pictures showing incompletely. The problem is mostly caused by wrong installation of display card drivers, drivers with bugs or wrong settings. If the problems are not the ones I mentioned above, and then try to resume the Registry or reinstall the operating system. In addition, if the picture is clear, just delete video card driver and properly reinstall right drivers. If display mess or dimness appears after entering system, the possible problem may be the monitor's or the video card does not support the display resolution.
Hardware incompatibility often comes as restart failure or black screen warning; and in most cases they are incompatible problems between display card and main board after eliminating the possibility of loose connection of signal transmission lines. For example, we can not start the computer after replacing the original low-end graphics card with a high-class one, however, we can set up another computer successfully with the advanced graphics card (we used in the former computer) inserting into another motherboard. Additionally, though the computer can be started up normally with some graphics cards, the drivers will be lost after running for a while. It's because the quality of the video card is not good, the video card is not compatible with the main board, or video card is overheating. Usually, we can upgrade the video driver or change another video card with different band and model to solve such problems.
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