The Disk Diagnostic: Configure custom alert text machine setting should be configured correctly. Substitutes custom alert text in the disk diagnostic message shown to users when a disk reports a S.M.A.R.T. fault. If you enable this policy setting, Windows will display custom alert text in the disk diagnostic message. The custom text may not exceed 512 characters. If you disable or do not configure this policy setting, Windows will display the default alert text in the disk diagnostic message. No reboots or service restarts are required for this policy to take effect: changes take effect immediately. This policy setting will only take effect if the Disk Diagnostic scenario policy is enabled or not configured and the Diagnostic Policy Service (DPS) is in the running state. When the service is stopped or disabled, diagnostic scenarios will not be executed. The DPS can be configured with the Services snap-in to the Microsoft Management Console. Fix: (1) GPO: Computer Configuration\Administrative Templates\System\Troubleshooting and Diagnostics\Disk Diagnostic\Disk Diagnostic: Configure custom alert text (2) KEY: HKLM\SOFTWARE\Policies\Microsoft\Windows\WDI\{29689E29-2CE9-4751-B4FC-8EFF5066E3FD}\DfdAlertTextOverride