Disable Driver Signature Enforcement

@Akhil Babu
Hi,

You could try the following steps:
Open a command prompt as an admin and type:

bcdedit -set loadoptions DISABLE_INTEGRITY_CHECKS
bcdedit -set TESTSIGNING ON

See security risk warning above.

If it doesn't work for whatever reason you can just remove loadoptions with bcedit and switch testsigning off.

bcdedit /deletevalue loadoptions
bcdedit -set TESTSIGNING OFF

In addition, here are some posts with the similar issue with yours, just for your reference, you can try the method mentioned in them:
https://social.technet.microsoft.com/Forums/en-US/9b6eee60-855d-47cc-9927-acae3fb6f971/permanently-disable-driver-signature-enforcement-on-win-7-x64?forum=w7itprohardware

Hope above information can help you.

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HI @Akhil Babu ,

You can disable the Driver Signature Enforcement permanently, although NOT recommended.
[Disable driver signature enforcement Windows Guide

Should be the same steps for Windows 7.

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Best regards,
Leon