Check the following:
For Windows Vista®, Windows® 8, Windows® 8.1 and Windows® 10 operating systems.
Re-download and install the USB driver. Downloads are posted on your model support page.
For the Windows® 7 operating systems.
NOTE: When the exclamation mark appears on Device Manager , the USB driver may not be installed on the Windows 7 operating system.
IMPORTANT: For more information, contact your computer manufacturer.
Check whether the security update program (KB3033929) is installed on your computer. For Windows 7 operating system, SHA-2 code signing and signature verification needs to be added.
The security update program (KB3033929) can also be applied to your computer by installing the latest modification program for the Windows 7 operating system (Service Pack, update program, patch).
Install the programs in the following order when installing manually.