Hi, It seems that version 3.5 is not compatible with Windows 7. According to the following thread, some users installed version 3.0 on Windows 7. http://h30434.www3.hp.com/t5/Printer-All-in-One-Software-and/PhotoSmart-Essentials-3-5-crashes-in-Windows-7/m-p/144642If it does not work, as Nano Warp mentioned, please try installing it in compatible mode.Hope it helps.
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