The Installation Of Sentinel System Driver Installer 7.5.7 Has Failed -

This is the most common fix for error 7.5.7.

If the easy steps failed, we need to go nuclear on the old drivers. Follow this sequence precisely. This is the most common fix for error 7

Real-time protection can block driver installations. After installation, re-enable all protections

After installation, re-enable all protections. This is the most common fix for error 7

Modern antivirus (especially McAfee, Norton, or Sophos) views kernel-mode driver installations as high-risk operations. They may quarantine installer components or block registry writes.

Turn off Real-Time Protection in Windows Defender, McAfee, Norton, or whatever you use. Only do this for the 5 minutes it takes to install the driver. Re-enable it immediately after.