# Remote System Information v1.5
# Shows details of targetted PCs
# Author: Alaknar (2016-06-30)
# Based on script by: Thom McKiernan (2014-11-09)
# Last update: 2016-07-19

function Get-ComputerInformation {

<#
.SYNOPSIS
    Query one or more computers for hardware and system details.
.DESCRIPTION
    Using CIM retrieve information about the hardware (computer make and model, CPU, GPU, HDD and others)
    and software (operating system, build, architecture and other).
.PARAMETER Identity
    PC name to be queried.
.EXAMPLE
    > Get-ComputerInformation PLWD6675
    System Information for: PLWD6675
    Manufacturer: Dell Inc.
    Model: OptiPlex 7010
    Serial Number: 636CGZ1
    CPU: Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz
    HDD Capacity: 465.21GB
    HDD Space: 84.58% Free (393.48GB)
    RAM: 7.89GB
    Operating System: Microsoft Windows 10 Enterprise (build 10.0.10586) 64-bit, Service Pack: 0
    User logged In: BIZ\ZabrzAnd
    Last Reboot: 07/08/2016 14:53:27
    Local Date and Time: 07/19/2016 11:12:56
.EXAMPLE
    > Get-ComputerInformation PLWD6675, PLWD6632
    Searches for 2 PCs and returns their software and hardware information.

#>

Param (
[Parameter(Mandatory=$True,Position=1)]
[string[]]$ComputerName
)

Foreach ($computer in $ComputerName) {
    [Microsoft.Management.Infrastructure.CimCmdlets.ProtocolType]$Protocol = 'DCOM'
    $option = New-CimSessionOption -Protocol $protocol
    $session = New-CimSession -ComputerName $computer -SessionOption $option
        $computerSystem = Get-CimInstance -CimSession $session -ClassName win32_computersystem
        $computerBIOS = Get-CimInstance -CimSession $session CIM_BIOSElement
        $computerOS = Get-CimInstance -CimSession $session CIM_OperatingSystem
        $computerCPU = Get-CimInstance -CimSession $session CIM_Processor
        $computerHDD = Get-CimInstance -CimSession $session Win32_LogicalDisk -Filter "DeviceID = 'C:'"

    ""
    Write-Host "System Information for:"$computerSystem.Name -BackgroundColor DarkCyan
    "Manufacturer: " + $computerSystem.Manufacturer
    "Model: " + $computerSystem.Model
    "Serial Number: " + $computerBIOS.SerialNumber
    "CPU: " + $computerCPU.Name
    "HDD Capacity: "  + "{0:N2}" -f ($computerHDD.Size/1GB) + "GB"
    "HDD Space: " + "{0:P2}" -f ($computerHDD.FreeSpace/$computerHDD.Size) + " Free (" + "{0:N2}" -f ($computerHDD.FreeSpace/1GB) + "GB)"
    "RAM: " + "{0:N2}" -f ($computerSystem.TotalPhysicalMemory/1GB) + "GB"
    "Operating System: " + $computerOS.caption + " (build " + $computerOS.Version + ") "+ $computerOS.OSArchitecture + ", Service Pack: " + $computerOS.ServicePackMajorVersion
    "User logged In: " + $computerSystem.UserName
    "Last Reboot: " + $computerOS.LastBootUpTime
    "Local Date and Time: " + $computerOS.LocalDateTime
    ""

    }

}