Hello. Have you updated your graphics card drivers or turned off hardware acceleration?
1.) Right-click the program icon on your desktop
2.) Click "Properties"
3.) Access the "Shortcut" tab
4.) In the "Target" field, after acad.exe" type a space and then /NOHARDWARE
5.) Click "OK" and retest
This type of error is usually due to install corruption, or possibly an incompatible driver on the system. Sometimes a format of the OS is useful, but it is pretty rare.
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