The computer upgrade win 10 failed, and the operating system could not be loaded, because it could not be verified that the digital signature of the file was caused by the wrong setting. The solution is as follows:

1, first we turn on this pc.

2. Then we enter the system partition.

3. Enter the path marked with a horizontal line in the figure.

4. Find files whose digital signatures cannot be verified.

5. Just delete it or move it to another location.