Powershell - Open/Close word document application

We need to do some text search on word doc, and use below lines of code to open document. I got the code running on two laptops, in one it doesn't open wordapp and in other it does......

$objWord = New-Object -Com Word.Application
$objWord.Visible = $false 
$objDocument = $objWord.Documents.Open($filename)
# Stop Winword Process
$rc = [System.Runtime.Interopservices.Marshal]::ReleaseComObject($objWord)

is there any other way of opening document, as this open WORD DOC application which we dont want that... How to scan document without letting word application open...