Question about IBM ThinkPad R40 2722 Notebook
Be sure that you have the correct sound card driver, if it uses an AC97 driver there are several different versions, also check that the sound did not automatically mute itself. Check the bios that the sound card is enabled.
Quite often the "recovery disk" that comes with the pc will reload windows and with generic sound and video drivers, they have to be replaced with the exact driver for the hardware the pc has - the best bet is to remove the old drivers first then go to IBM and look up the exact model number and see which drivers are recommended or available, usually also the IBM site will list the possible drivers for sound and they are usually available from the manufacturer site. Here's the link for IBM http://www-307.ibm.com/pc/support/site.wss/MIGR-46024.html
Posted on Oct 02, 2009
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Posted on Jan 02, 2017
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