Dim objAPP, sMsg
On Error Resume Next
Set objAPP = GetObject(, "PowerPoint.Application")
If TypeName(objAPP) = "Empty" Then
sMsg = "not started"
Else
sMsg = "started"
End If
MsgBox "PowerPoint is " & sMsg, vbInformation, "PowerPoint"
if sMsg = "started" then objAPP.Visible = true