Method 1:
1, click the start menu. Enter cmd in the search, and then run as an administrator;
2. Execute the following command:
BCDEDIT-SET load options DISABLE _ INTEGRITY _ CHECKS
BCDEDIT -SET TESTSIGNING ON
3. restart the Win7 system.
Method 2:
1. Press F8 to start the advanced startup menu of win7.
2. Then select "Disable driver signature enforcement";
3. Then install the driver in this mode to ignore the signature.