src/Microsoft.PowerShell.Commands.Management/commands/management/Computer.cs:1482

• [ValidateRange(0, ValidateRangeKind.Positive)] is not a valid ValidateRangeAttribute overload and is likely to break compilation. Use a numeric range (as done for RestartDelay) to allow 0..UInt32.MaxValue.

        [Parameter]
        [ValidateRange(0, ValidateRangeKind.Positive)]
        public UInt32 ShutdownDelay { get; set; }

src/Microsoft.PowerShell.Commands.Management/commands/management/Computer.cs:1489

• StopComputerCommand.Comment is passed through to the Win32ShutdownTracker call even when the parameter isn't bound. Defaulting it to string.Empty avoids sending null to CIM/WMI and also matches the Restart-Computer implementation.

        [Parameter]
        [ValidateNotNullOrEmpty]
        public string Comment { get; set; }

src/Microsoft.PowerShell.Commands.Management/commands/management/Computer.cs:1536

• -Reason Planned cannot work for Stop-Computer because the switch doesn't handle the Planned enum name; it falls through to default and sends Other instead.

                case "Application":
                    flags[2] = ShutdownReasons.Application;
                    break;
                case "Hardware":
                    flags[2] = ShutdownReasons.Hardware;

src/Microsoft.PowerShell.Commands.Management/commands/management/Computer.cs:2548

• flags[2] is populated with ShutdownReasons enum values, but the CIM parameter is declared as UInt32. Passing a boxed enum here can cause runtime type validation failures in CimMethodParameter.Create. Convert the value to uint before adding the parameter.

                    methodParameters.Add(CimMethodParameter.Create(
                        "ReasonCode",
                        flags[2],
                        Microsoft.Management.Infrastructure.CimType.UInt32,
                        CimFlags.None));