hi, just wondering if anyone could help me, my acer aspire 5520 laptop has no sound, displays "no audio output device is installed" ... literally stopped working randomly when i switched it on in usual way... ive tried restoring it to factory setting, without luck , very frustrating having a laptop with no sound especially as my two young sons rely heavily on it for educational resources.... pls help
I have the same computer and the same problem. Aspire 5520, Vista Home Premium, 32bit. Sometimes the audio works when I turn it on but most times does not. I have tried updating the drivers through Windows update, uninstalling and reinstalling, downloading directly from Realtek and installing. I have since upgraded to Windows 7 Premium 64 bit, and the problem was fine for awhile but continues to this day. Even doing a system restore to a time when the audio worked does not work. I have tried updating the driver through Device Manager, through third party system repair programs such as System Mechanic, I have run Microsoft Fix-It troubleshooter. The volume icon shows a red X and the device in Device Manager has a yellow triangle ! mark.
I have also downloaded drivers from the acer support site (for Vista), however there is no audio driver listed on the site for Windows 7 64bit for this model number.
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