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EDU7.2, WIN7 64-bit, after installing the driver in the system, restart to display the unauthenticated digital signature of ntdisk.sys
Dear users, hello!

Maybe your driver is 32-bit. I suggest you download and install 64-bit driver again.

Driver download link:

/lenovo/wsi/Modules/Drive.aspx? intcmp=I_F_Driver

For more discussion on related issues, welcome to Lenovo's official community.

/community.html? Baidu & PK _ kwd =1_ 00001

Find the most authoritative and professional answer.

I look forward to your satisfactory evaluation, thank you for your support to Lenovo, and wish you a happy life!