Question: how to check your graphics card for errors?
Answer: OCCT. OCCT is a well known testing tool that is able to stress multiple parts of the system like CPU, video card and power supply. ...  GpuMemTest. ...  FurMark. ...  MSI Kombustor / EVGA OC Scanner X / FurMark Asus ROG Edition. ...  Video Memory stress Test. ...  MemtestG80/MemTestCL.