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Cannot install Windows 7 on Dell OptiPlex 7040


I bought OptiPlex 7040 module which had Windows 10 Korean version 1 weeks ago. I want to install Windows 7 but it seems to be not work.

My computer has SSD and HDD. When the installation starts, I cannot find the SSD, therefore I select the HDD for installing Windows 7. (I already try this guide en.community.dell.com/.../19669861 but it is not work)

However, the installation process run few seconds and it stop after rebooting.

Could you please tell me how to fix this problem? Thank you

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RE: Cannot install Windows 7 on Dell OptiPlex 7040


You can click the link below and choose install option 3 to install Windows 7. You can also do a google search for many links to downgrade to Windows 7.

How to install Windows 7 on OptiPlex 7040

Downgrade from Windows 10 to Windows 7

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