Hello Frustrated111,
Welcome to the forums!
I would suggest first to make sure that the software is fully uninstalled for the Windows 7 portion. I have included the document 'Uninstalling the Printer Software'. Please select Windows 7, and then follow through the steps for uninstalling all the software, and updates.
After everything is uninstalled, please restart your computer. Once the restart has finished. You will need to download, and install the software. I have included the link 'HP Photosmart Full Feature Software and Drivers'. After the download has completed, follow the on screen instructions for installation.
Please let me know if you are able to successfully install the software, or if you are still getting an error message.
Looking forward to hearing from you.
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Re: C7280 - Unsuccessful software and driver update/install
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