Avast found and isolated many instances of a virus called win32:sality-gen. But now Windows continually tries to Unload programs and suggest I find varioius “.msi” files which are not on my my hard drive or disks.
Message: “Error 1706. No valid source could be found for product unload. The Windows installer cannot continue.”
These are some of the paths it’s trying to reach. I assume the virus scan removed them.
From what i can see your HP AiO multifuntion device software is broken. Try removing all existing HP software and re-install it.
This should fix the above thingie. If that doesn’t work you can try integrated Repair function that is usually included in .msi installers.