I know that Dell does not support the upgrade of the OptiPlex 780 machines to Windows 10 but I work for a small non-profit and we are moving to online products that require Windows 10 and I have to make it work. We have ten of these machines and was hoping that others have done this already and can tell me the pitfalls/fixes.... is there anything I should do first... Bio version? Chipset? etc. I have already upgrades a Latitude E6410 and there were a whole lot of steps to get it to work but there was a lot of info out there on Google to help. Not so with the 780 machines. I do know that I have to upgrade my version of Symantec.
My machines have Intel Core 2 Quad 2.66GHz Q9400 processors and 4 GB Ram with 150 GB capacity.
Any help would be appreciated!
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The support is not provide for the Optiplex 780 machines to windows 10 is because of various reasons.
1- System configuration
2- Compatibility issues
Moreover its not tested so we really wouldn't be able to tell you the issues that it may incur.
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Robin, with the 10s of thousands of 780 out there I am sure that I am not the only group that HAS to make this work. Are you telling me that there is no way to make it work no matter what efforts I go to? I am hoping for some guidance from someone that has been successful and it was suggested that this would be a good forum to ask.
The OptiPlex 780 was released in Late 2009. Most would have been sold in 2009-2011 and with 4 years warranty standard, pretty much all units have expired warranty. Dell therefore are extremely unlikely to allocate resources to testing this model.
However the OptiPlex 780 is a robust Intel machine. Pretty much all the system drivers will be inbuilt into Windows 10 TH2 for it.
Make sure all systems are on Legacy BIOS revision A15:
This system doesn't have UEFI and SecureBoot.
Then made a Dell Backup and Recovery 16 GB USB flash Drive (using the latest version):
Then you can proceed with the clean install (recommended) or upgrade install (not recommended):
When making a Bootable USB use the MBR partition scheme for legacy BIOS.
Some additional tutorial videos are here:
Others have reported successful installs: