I'll start off by saying that my code is ugly, but mostly works(Except it gets really pissed off if a local user is logged in vs domain user). But for some reason when I run the command

(Get-WmiObject Win32_OperatingSystem -cn <computername).OSArchitecture

It returns correctly. But in my code it's forever stuck on 32bit. What am I doing wrong?

#Written by me
#My friend wrote a script similar to this in vbscript
#But in the off chance a company I worked for didn't allow it's use, I wanted something to replace it that was as versatile

# Parameters
param
(
[string]$strComp
)

#Clear the screen
cls

# Check parameters input
if( $strComp -eq "" )
{
$res = "Missing parameters - Usage: .\CheckComputer.ps1 hostname"
echo $res
exit
}

#Load AD module
import-module activedirectory

#Checks if computer is 32-Bit or 64-Bit
$Arch = (Get-WmiObject Win32_OperatingSystem -computername $strComp).OSArchitecture


#The below function was borrowed from http://stackoverflow.com/questions/2688547/muliple-foreground-colors-in-powershell-in-one-command
#This helps set the color of the text
function Write-Color([String[]]$Text, [ConsoleColor[]]$Color = "White", [int]$StartTab = 0, [int] $LinesBefore = 0,[int] $LinesAfter = 0) {
 $DefaultColor = $Color[0]
if ($LinesBefore -ne 0) {  for ($i = 0; $i -lt $LinesBefore; $i  ) { Write-Host "`n" -NoNewline } } # Add empty line before
if ($StartTab -ne 0) {  for ($i = 0; $i -lt $StartTab; $i  ) { Write-Host "`t" -NoNewLine } }  # Add TABS before text
if ($Color.Count -ge $Text.Count) {
for ($i = 0; $i -lt $Text.Length; $i  ) { Write-Host $Text[$i] -ForegroundColor $Color[$i] -NoNewLine } 
} else {
for ($i = 0; $i -lt $Color.Length ; $i  ) { Write-Host $Text[$i] -ForegroundColor $Color[$i] -NoNewLine }
for ($i = $Color.Length; $i -lt $Text.Length; $i  ) { Write-Host $Text[$i] -ForegroundColor $DefaultColor -NoNewLine     }
}
Write-Host
if ($LinesAfter -ne 0) {  for ($i = 0; $i -lt $LinesAfter; $i  ) { Write-Host "`n" } }  # Add empty line after
}

#Function for days since password change borrowed from http://www.workingsysadmin.com/powershell-function-to-get-time-since-a-users-password-was-last-changed/
function Get-TimeSinceLastPWSet {
[CmdletBinding()]
param (
    [Parameter(Mandatory=$True,
            Position=1,
    ValueFromPipeline=$True)]
    [string]$Username
)

$tsSinceLastPWSet = New-TimeSpan $(get-aduser $Username -Properties Passwordlastset).Passwordlastset $(get-date)
$strFormatted = '{0:dd} days, {0:hh} hours' -f $tsSinceLastPWSet
return $strFormatted
}

#This is to check if Imprivata exists
If ($Arch = "32-Bit") {
if((Test-Path -Path "\\$strComp\C$\Program files\Imprivata\OneSign Agent\ISXAgent.exe" -pathtype Container) -eq $True)
    {
     Set-Variable -Name Imprivata -Value True
    }
    Else {
    Set-Variable -Name Imprivata -Value False
    }
}
elseif ($Arch = "64-Bit") {
if((Test-Path -Path "\\$strComp\C$\Program files (x86)\Imprivata\OneSign Agent\ISXAgent.exe" -pathtype Container) -eq $True)
    {
     Set-Variable -Name Imprivata -Value True
    }
    Else {
    Set-Variable -Name Imprivata -Value False
    }
}

$ModelInfo = (Get-WmiObject -computername $strComp Win32_Computersystem -ErrorAction silentlycontinue).model

$SerNum = (Get-WmiObject -computername $strComp -Class Win32_BIOS -ErrorAction silentlycontinue).SerialNumber

$LoggedOnUser = (Get-WMIObject -computername $strComp -class Win32_ComputerSystem).username


#Split
$Split = $LoggedOnUser.Split('\')

# Get User
$User = $Split[1]

$LoggedOnName = (Get-ADuser -Identity $User).Name

$DaysSinceChange = Get-TimeSinceLastPWSet $User 

#This function helps me get Password expiration
#function Get-PasswordExpirationDays ($User)
#{
#    (([datetime]::FromFileTime((Get-ADUser –Identity $User -Properties "msDS-UserPasswordExpiryTimeComputed")."msDS-UserPasswordExpiryTimeComputed"))-(Get-Date)).Days
#}  

$Booted = { (Get-WmiObject -computername $strComp Win32_OperatingSystem).LastBootUpTime
[Management.ManagementDateTimeConverter]::ToDateTime($Booted) }

$wmi = Get-WmiObject -ComputerName $strComp -Query "SELECT LastBootUpTime FROM Win32_OperatingSystem"

$now = Get-Date

$boottime = $wmi.ConvertToDateTime($wmi.LastBootUpTime)

$uptime = $now - $boottime

$d =$uptime.days

$h =$uptime.hours

$m =$uptime.Minutes

$s = $uptime.Seconds

$OS = (Get-WmiObject -ComputerName $strComp Win32_OperatingSystem).Caption

$disk = Get-WmiObject Win32_LogicalDisk -ComputerName $strComp -Filter "DeviceID='C:'" | Select-Object Size, FreeSpace

$RAM = [Math]::Round((Get-WmiObject -Class win32_computersystem -ComputerName $strComp).TotalPhysicalMemory/1Gb)


$Insdate = (gcim Win32_OperatingSystem).InstallDate


$LockedOut = (Get-Aduser $User -Properties LockedOut).LockedOut

$PasswdLastSet = (Get-ADUser -Identity $User -Properties PasswordLastSet).PasswordLastSet

$Department = Get-ADUser -Identity $User -Properties Department | Select-Object -expandproperty Department

$HomeDir = Get-ADuser -Identity $User  -Properties homeDirectory | Select-Object -expandproperty homeDirectory

$PhoneNum =  Get-ADuser -Identity $User  -Properties officephone | Select-Object -expandproperty officephone

#Lets test if the computer is on the network before we throw lots of commands at it
if(Test-Connection -cn $strComp -Quiet -BufferSize 16 -Count 1)
 {
Write-Color "#########################################" -Color Red
Write-Color "Information for $strComp" -Color White
Write-Color "#########################################" -Color Red
Write-Color "Operating System: $OS $Arch" -Color White
Write-Color "Computer Model: $ModelInfo" -Color White
Write-Color "Computer Serial Number: $SerNum" -Color White
Write-Color "Computer uptime: Days: $d Hours: $h Minutes: $m Seconds: $s" -Color White
Write-Color "Computer OS was installed on $InsDate" -Color White
Write-Color "Computer Network information: $Info" -Color White
Write-Color "#########################################" -Color Red
Write-Color "Currently logged in name: $LoggedOnName" -Color White
Write-Color "Currently logged on user: $User" -Color White
Write-Color "Current User locked: $LockedOut" -Color White
Write-Color "Current User Password last set : $DaysSinceChange ago" -Color White
Write-Color "Current User Department: $Department" -Color White
Write-Color "Current User Home Directory: $HomeDir" -Color White
Write-Color "Current User Phone Number: $PhoneNum" -Color White
Write-Color "#########################################" -Color Red
Write-Color "Hard drive information for C:" -Color White
Write-Color ("{0}GB total" -f [math]::truncate($disk.Size / 1GB)) -Color White
Write-Color ("{0}GB free" -f [math]::truncate($disk.FreeSpace / 1GB)) -Color White
Write-Color "#########################################" -Color Red
Write-Color "RAM information for $strComp" -Color White
Write-Color "Installed RAM: $RAM GB" -Color White
Write-Color "#########################################" -Color Red
Write-Color "Has Imprivata: $Imprivata"

}
Else
{
write-host $strComp is offline  
 }