Problem phenomenon:
Windows 10 system installs and uses some CAD before the AutoCAD 2016 version, and there is a phenomenon that CAD cannot be used normally (for example, there are problems such as flashback, inability to use, etc.).
Problem causes:
Notes on the AutoCAD website: All 2017, 2018, 2019 and 2020 Autodesk software runs on Windows 10. You can also run many 2016 products on Windows 10 with the Autodesk Service Pack specified in System Requirements applied. Most 2015 and earlier products are not compatible with Windows 10 unless stated in the system requirements.
AutoCAD Official website description: https://knowledge.autodesk.com/support/autocad/learn-explore/caas/sfdcarticles/sfdcarticles/Windows-10-support-for-Autodesk-products.html
AutoCAD systems before AutoCAD 2016 do not support Windows 10.
System requirements of each version of AutoCAD: https://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/System-requirements-for-AutoCAD.html
Solution:
Windows 10 supports AutoCAD 2016 and above. These official versions have been tested and verified and can be installed and used normally. So please install AutoCAD 2016 and above. If it cannot be installed, it is recommended to contact the AutoCAD software.
Note: In order to protect your legitimate rights and interests, please use official genuine software. Official service support will not be provided for the use of pirated software or AutoCAD official "not explicitly listed to support" versions that can be used on Windows 10 systems.