With types found in System.Windows.Forms, PowerShell can easily capture your screen and save the screenshot to a file. The code below captures your entire virtual screen, saves the screenshot to file, then opens the bitmap file in the associated program (if any):
$Path = "$Env:temp\screenshot.bmp" Add-Type -AssemblyName System.Windows.Forms $screen = [System.Windows.Forms.SystemInformation]::VirtualScreen $width = $screen.Width $height = $screen.Height $left = $screen.Left $top = $screen.Top $bitmap = [System.Drawing.Bitmap]::new($width, $height) $MyDrawing = [System.Drawing.Graphics]::FromImage($bitmap) $MyDrawing.CopyFromScreen($left, $top, 0, 0, $bitmap.Size) $bitmap.Save($Path) Start-Process -FilePath $Path