Fix in alignment errors

Test-BatteryDrain.ps1

@@ -196,12 +196,12 @@ Add-Type -Namespace Native -Name Power -MemberDefinition @'
 public static extern uint SetThreadExecutionState(uint esFlags);
 '@
 
-$ES_CONTINUOUS = 0x80000000
-$ES_SYSTEM_REQUIRED = 0x00000001
-$ES_DISPLAY_REQUIRED = 0x00000002
+$ES_CONTINUOUS = [Convert]::ToUInt32('80000000', 16)
+$ES_SYSTEM_REQUIRED = [Convert]::ToUInt32('00000001', 16)
+$ES_DISPLAY_REQUIRED = [Convert]::ToUInt32('00000002', 16)
 
 function Set-StayAwake {
-    [Native.Power]::SetThreadExecutionState($ES_CONTINUOUS -bor $ES_SYSTEM_REQUIRED -bor $ES_DISPLAY_REQUIRED) | Out-Null
+    [Native.Power]::SetThreadExecutionState([uint32]($ES_CONTINUOUS -bor $ES_SYSTEM_REQUIRED -bor $ES_DISPLAY_REQUIRED)) | Out-Null
 }
 
 function Clear-StayAwake {
@@ -283,6 +283,19 @@ function Get-BatteryInfo {
 
 #region Main
 try {
+    # Validate/prepare the log path up front so a bad path fails fast, before power settings or
+    # the CPU load are touched. Falls back to the script folder if the requested location is invalid.
+    $logDir = Split-Path -Path $LogPath -Parent
+    if ($logDir -and -not (Test-Path -Path $logDir)) {
+        try {
+            New-Item -ItemType Directory -Path $logDir -Force | Out-Null
+        } catch {
+            $fallbackPath = Join-Path -Path $PSScriptRoot -ChildPath (Split-Path -Path $LogPath -Leaf)
+            Write-Warning "Could not create log directory '$logDir' ($($_.Exception.Message)). Falling back to '$fallbackPath'."
+            $LogPath = $fallbackPath
+        }
+    }
+
     if (-not $SkipPowerSettingsChanges) {
         Set-PowerSettingsForBatteryTest
     } else {
@@ -295,9 +308,6 @@ try {
     Write-Host "Starting synthetic CPU load targeting ~$TargetLoadPercent% across $cores logical processors..." -ForegroundColor Cyan
     $loadJobs = Start-CpuLoad -Percent $TargetLoadPercent -Cores $cores
 
-    if (-not (Test-Path (Split-Path -Path $LogPath -Parent))) {
-        New-Item -ItemType Directory -Path (Split-Path -Path $LogPath -Parent) -Force | Out-Null
-    }
     "Timestamp,PercentRemaining,Status,Charging,EstimatedRunTimeMinutes" | Out-File -FilePath $LogPath -Encoding UTF8
 
     Write-Host "Logging battery status every $SampleIntervalSeconds s to $LogPath" -ForegroundColor Cyan