pasquier

good morning, I haven't had any problem using the 737 PMDG with SP1b but installing the SP1c caused the loss of all cockpit sounds (EGPWS, switches, callouts, flaps, breaks, alarms, etc.). I have Windows 7 Home premium 64 bit I have installed and uninstalled twice the add-on PMDG 737 NGX and the SP1C with the same problem. However the engines sounds work fine. Do you have any suggestions what can cause this problem? fsx options sounds actif in the fmc 737-800 version without sp1c options sound device I have a line with (speakers (2-realtek hi) in the fmc 737-800 version with sp1c options sound device the window is empty thank you for answering me