A: No. The "Full Feature" package includes both. ISIS is critical for high-speed capture software (like Kofax or Ephesoft). TWAIN is for standard photo editing software (like Adobe Photoshop).

Open the Windows Device Manager, find any items showing a yellow exclamation mark, right-click, and select "Update Driver" to force path routing to the software folder.

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A: Go to Control Panel > Programs and Features. Uninstall anything labeled "HP ScanJet." Then, go to Device Manager, right-click the scanner under "Imaging Devices," and select "Uninstall device." Then reboot and install fresh.

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