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Are you using a PC? If so check to make sure you have no "conflicts" going on in your system. Default the patch mix, the re assign the default audio devices in your system settings and try again with the patch mix and monitors. Unplugging normal jacks/xlrs should not cause this to happen. Just a fluke it happened at the same time.
I would check for any software/firmware updates too
This document pertains to HP or Compaq PCs with an HDMI (High-Definition Multimedia Interface) connector for connecting a monitor or TV.
If you use HDMI to connect your display, you must activate HDMI sound by adjusting your Windows settings .
If HDMI is not activated, you cannot hear any sound. Because of this, HP recommends that you connect analog speakers to the computer to hear sound during the initial setup of the computer.
Use the following steps to activate HDMI sound on your computer:
If you ever perform an HP system recovery, you must repeat this procedure to activate sound for the HDMI connector.
Right-click the Volume icon by the time in the lower-right corner.
Click Playback Devices .
The Sound window opens.
On the Playback tab, click Digital Output Device (HDMI) if it is listed. If it is not listed, click Realtek HDMI Output .
Figure 1: Digital Output Device (HDMI) selectionFigure 2: Realtek HDMI Output selection
Click Set Default .
Click Apply .
If you used Digital Output Device (HDMI) , click OK to close the window. This completes the steps to activate HDMI sound.
If you used Realtek HDMI Output , continue with Step 6.
Double-click Realtek HDMI Output .
The Realtek Digital Output Properties window opens.
Click the Supported Formats tab.
Place a check in the 48.0 KHz check box, and make sure that there are no checks in the Dolby Digital check box and all other check boxes.
Figure 3: Supported Formats settings in the Realtek Digital Output Properties windowNOTE:
For most TVs to play back audio, the sample rate must be 48.0 KHz.
Please check to see if your sound card is installed/enabled, then check to see if the sound files are set to open with that device. Your computer should already have a media player installed (if you're using Windows). Set your music files to open with the media player.
The sound card features might be turned off and causing Error Code: 88780078. To activate these "features": 1)control panel 2)sounds and audio devices 3)Hardware tab 4)sound card should be listed... highlight... Properties 5)Properties tab 6)Audio Devices 7)highlight sound card and click Properties 8)If audio features are disabled... select "Use audio features on this device" 9)restart computer
I ahve problem like My laptop is C700 series of compaq(C772TU) I ahve changed it OS from vista to XP and now there is no audio output whenever I try to play a song it gives msg like " Please installproper device or select another device in configuration Error code: 88780078"
please suggest me proper solution
The e-mu sure can do it. You just run whatever output you want into the input on the sound board. The setup is exactly the same as if you just wanted to play winamp music on the system.
It's your computer that can't handle it. Computer only has one sound output, so you can't play two separate things in two separate instances of winamp, because the sound only comes out of one place on your laptop.
You can buy a second external sound card, like the SB Live External USB Sound card, and maybe run both at the same time, having one winamp output to the external device, and the other winamp output to the laptop's internal sound card device, then one line runs to your e-mu system and the other to a pair of headphones.