Вы бы показали вывод Get-Host или $PSVersionTable...
Родной PowerShell в Windows 7 надо обновлять до версии 5.1 (последняя не кросс-платформ), если Вы решили идти путем PowerShell.
Можно, как вариант, использовать
VBScript
On Error Resume Next
strComputer = "."
Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\cimv2")
Set colItems = objWMIService.ExecQuery("Select * from Win32_DiskDrive",,48)
For Each objItem in colItems
Wscript.Echo "Availability: " & objItem.Availability
Wscript.Echo "BytesPerSector: " & objItem.BytesPerSector
Wscript.Echo "Capabilities: " & objItem.Capabilities
Wscript.Echo "CapabilityDescriptions: " & objItem.CapabilityDescriptions
Wscript.Echo "Caption: " & objItem.Caption
Wscript.Echo "CompressionMethod: " & objItem.CompressionMethod
Wscript.Echo "ConfigManagerErrorCode: " & objItem.ConfigManagerErrorCode
Wscript.Echo "ConfigManagerUserConfig: " & objItem.ConfigManagerUserConfig
Wscript.Echo "CreationClassName: " & objItem.CreationClassName
Wscript.Echo "DefaultBlockSize: " & objItem.DefaultBlockSize
Wscript.Echo "Description: " & objItem.Description
Wscript.Echo "DeviceID: " & objItem.DeviceID
Wscript.Echo "ErrorCleared: " & objItem.ErrorCleared
Wscript.Echo "ErrorDescription: " & objItem.ErrorDescription
Wscript.Echo "ErrorMethodology: " & objItem.ErrorMethodology
Wscript.Echo "Index: " & objItem.Index
Wscript.Echo "InstallDate: " & objItem.InstallDate
Wscript.Echo "InterfaceType: " & objItem.InterfaceType
Wscript.Echo "LastErrorCode: " & objItem.LastErrorCode
Wscript.Echo "Manufacturer: " & objItem.Manufacturer
Wscript.Echo "MaxBlockSize: " & objItem.MaxBlockSize
Wscript.Echo "MaxMediaSize: " & objItem.MaxMediaSize
Wscript.Echo "MediaLoaded: " & objItem.MediaLoaded
Wscript.Echo "MediaType: " & objItem.MediaType
Wscript.Echo "MinBlockSize: " & objItem.MinBlockSize
Wscript.Echo "Model: " & objItem.Model
Wscript.Echo "Name: " & objItem.Name
Wscript.Echo "NeedsCleaning: " & objItem.NeedsCleaning
Wscript.Echo "NumberOfMediaSupported: " & objItem.NumberOfMediaSupported
Wscript.Echo "Partitions: " & objItem.Partitions
Wscript.Echo "PNPDeviceID: " & objItem.PNPDeviceID
Wscript.Echo "PowerManagementCapabilities: " & objItem.PowerManagementCapabilities
Wscript.Echo "PowerManagementSupported: " & objItem.PowerManagementSupported
Wscript.Echo "SCSIBus: " & objItem.SCSIBus
Wscript.Echo "SCSILogicalUnit: " & objItem.SCSILogicalUnit
Wscript.Echo "SCSIPort: " & objItem.SCSIPort
Wscript.Echo "SCSITargetId: " & objItem.SCSITargetId
Wscript.Echo "SectorsPerTrack: " & objItem.SectorsPerTrack
Wscript.Echo "Size: " & objItem.Size
Wscript.Echo "Status: " & objItem.Status
Wscript.Echo "StatusInfo: " & objItem.StatusInfo
Wscript.Echo "SystemCreationClassName: " & objItem.SystemCreationClassName
Wscript.Echo "SystemName: " & objItem.SystemName
Wscript.Echo "TotalCylinders: " & objItem.TotalCylinders
Wscript.Echo "TotalHeads: " & objItem.TotalHeads
Wscript.Echo "TotalSectors: " & objItem.TotalSectors
Wscript.Echo "TotalTracks: " & objItem.TotalTracks
Wscript.Echo "TracksPerCylinder: " & objItem.TracksPerCylinder
Next