Serial port acting weird after hibernate/resume? - vb.net

Question

Guys I am having a weird problem with my vb.net application after the computer goes into hibernate mode and resumes. Before it goes into sleep mode I close all my serial ports and set it to nothing...
Private Sub SystemEvents_PowerModeChanged(ByVal sender As Object, ByVal e As PowerModeChangedEventArgs)
oEventLog.WriteEntry("Power change detected: " & e.Mode.ToString)
txtStatus.AppendText("Power change detected: " & e.Mode.ToString & vbCrLf)
If e.Mode <> PowerModes.Resume Then
Try
If Input IsNot Nothing Then
Input.Dispose()
Input.Close()
Input = Nothing
End If
If Output IsNot Nothing Then
Output.Dispose()
Output.Close()
Output = Nothing
End If
Catch
txtStatus.AppendText(Err.Description)
End Try
Else
initilizeSerialPorts()
End If
End Sub
When the computer resumes I initialize my serial ports again. The problem is when I try to open them again it says they are already in use. So I loaded up process explorer to see what has it open and it's still my application! So it seems closing them and setting them to nothing does nothing. If I close my application and re-run it everything works just fine.
Private Function initilizeSerialPorts() As Boolean
If Input IsNot Nothing Then
Input.Dispose()
Input.Close()
Input = Nothing
End If
If Output IsNot Nothing Then
Output.Dispose()
Output.Close()
Output = Nothing
End If
Input = New SerialPort(cmboInput.SelectedItem.ToString)
Output = New SerialPort(cmboOutput.SelectedItem.ToString, Input.BaudRate, Input.Parity, Input.DataBits, Input.StopBits)
Me.Refresh()
****MSGBOX HERE MAKES IT WORK?!!****
Try
If Not Input.IsOpen Then
Input.Open()
Else
MsgBox("Unable to open the serial port " & Input.PortName)
Return False
End If
Catch
MsgBox("Unable to initalize serial port " & Input.PortName & vbCrLf & "Error: " & Err.Number.ToString & " " & Err.Description)
End Try
Try
If Not Output.IsOpen Then
Output.Open()
Else
MsgBox("Unable to open the serial port " & Output.PortName)
Return False
End If
Catch
MsgBox("Unable to initalize serial port " & Output.PortName & vbCrLf & "Error: " & Err.Number.ToString & " " & Err.Description)
End Try
Return True
End Function
Ok here is the kicker...if I put a message box before I open my port again it works? No message box and I get a failed to open port message it's in use. Any ideas why this might be happening?
Thanks in advance