What are the possible graphic card problems?

[neku]

There is no display for a particular computer, I have used different monitors and cables. so it is likely to be a graphics card problem. What are the main graphics card problems, and can they be fixed without replacing hardware?

 

[King Belieal]

Dust can affect the graphics card. Also, overheating can damage a graphics card. Performing tasks that are too heavy for the graphics card can cause overheating.