Graphics cards are mainly used for advanced graphical elements within software or games, most home users won't have this problem due to the fact that onboard graphics is usually sufficient. The level of card used usually determins the underpining problem, most high powered graphics cards are rather resourceful which generally leads to system errors. When diagnosing graphical related problems, the graphics card is the first point of call after a connection test. Many home built computers have some serious kit inside (Mainly Gamers), and the faults generally lie with inproper configuration of the system. Upon the purchase of a new graphics card you should always check the specification required to run the device efficiently.
The higher the spec of the card generally requires a higher specification of other key components, this MUST be researched prior to purchase. You will find lots of forums around the Internet about specific issues relating to the chosen graphics card.
If you find out your graphics card is a driver fault and finding the correct driver is to much of a hassle, then why not try "Driver Detective", it will locate and install the latest driver for your system at an extremely affordable price. One final word of warning when using powerful graphics cards is to ensure you have a concurent airflow throughout the system stopping system crashing by heat problems. Use additional fans to cool the system and make sure your computer is not sat directly on the floor, raise the PC to improve clean air intake. Make sure you regulary clean out the system of excess dust which may form static charge or simply reduce the original airflow causing system over heating.
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