About a week or two ago, my game stopped having sound. I can still get sound normally with every other application on the PC (Windows VIsta), only WoW has a problem. I have no sound issues on another laptop/other PC with this account.

I have gone through the steps at http://us.blizzard.com/support/article.xml?locale=en_US&articleId=21081&parentCategoryId&pageNumber=1&categoryId=2333 with no success

Help please!

My SESOund.log file is:

4/29 08:22:46.846 => Version 3.3.3 (11723) Mar 24 2010
4/29 08:22:46.862
4/29 08:22:46.879 => Setting up Game Sound:
4/29 08:22:46.933 - SESound Engine Init
4/29 08:22:46.947 - FMOD Memory Init
4/29 08:22:46.981 - FMOD System Create
4/29 08:22:47.093 - FMOD version 00040907 detected
4/29 08:22:47.104 - Hardware is ENABLED
4/29 08:22:47.112 - Reverb is DISABLED
4/29 08:22:47.130 - 3 Output drivers detected
4/29 08:22:47.130 --- [0] System Default
4/29 08:22:47.164 --- [1] Speakers (Realtek High Definition Audio)
4/29 08:22:47.189 --- [2] Realtek Digital Output (Realtek High Definition Audio)
4/29 08:22:47.233 - Using [0] System Default for Game Output
4/29 08:22:47.245 - 64 Channels Requested.
4/29 08:22:47.270 - Querying Sound Driver for Available Hardware Channels.
4/29 08:22:47.345 - Sound Driver Reports: 0 Hardware Channels Available.
4/29 08:22:47.378 -###########################################################################################
4/29 08:22:47.378 -# NOTICE: Insufficient Available Hardware Channels.
4/29 08:22:47.394 -# World of Warcraft Requires At Least 12 Hardware Channels to Function Properly in Hardware Mode.
4/29 08:22:47.394 -# Enabling Software Channels.
4/29 08:22:47.427 -###########################################################################################
4/29 08:22:47.427 - Using 64 channels.
4/29 08:22:47.481 - DSPBufferSize = AUTO DETECT
4/29 08:22:47.485 - Detected Control Panel Speaker Mode = STEREO
4/29 08:22:47.510 - Setting WoW Speaker Mode to STEREO
4/29 08:22:47.559 - FMOD System Init OK!
4/29 08:22:47.577 => Game Sound is ready.
4/29 08:22:47.602
4/29 08:22:47.635 => User Settings Report:
4/29 08:22:47.660 - ========= PLAYBACK =========
4/29 08:22:47.685 - Enable All Sound [1]
4/29 08:22:47.718 - Enable SFX [1]
4/29 08:22:47.726 --- Enable Error Speech [1]
4/29 08:22:47.726 --- Enable Emote Sounds [1]
4/29 08:22:47.742 - Enable Music [1]
4/29 08:22:47.751 --- Loop Music [0]
4/29 08:22:47.751 - Enable Ambient Sounds [1]
4/29 08:22:47.767 - Sound at Character [1]
4/29 08:22:47.767 - Sound in Background [1]
4/29 08:22:47.784 - Enable Reverb [0]
4/29 08:22:47.784 - Enable Software HRTF [0]
4/29 08:22:47.801 - Sound Quality [2]
4/29 08:22:47.801 -
4/29 08:22:47.817 - ========== VOLUME ==========
4/29 08:22:47.817 - Master Volume [1.00]
4/29 08:22:47.834 - SFX Volume [1.00]
4/29 08:22:47.834 - Music Volume [0.60]
4/29 08:22:47.868 - Ambience Volume [0.60]
4/29 08:22:47.910 -
4/29 08:22:47.960 - =========== MISC ===========
4/29 08:22:47.976 - Sound Channels [64]
4/29 08:22:47.992 - Use Hardware [1]
4/29 08:22:48.017 - Mix Mode 2 [0]
4/29 08:22:48.041 - DSP Buffer Size [AUTO]
4/29 08:22:48.066 - Armor Foley SFX (Self) [1]
4/29 08:22:48.099 - Armor Foley SFX (Others) [1]
4/29 08:22:48.124 => End of User Settings Report

It looks like it can't start the sound engine. Try installing these and see what happens - http://www.realtek.com.tw/downloads/downloadsView.aspx?Langid=1&PNid=14&PFid=24&Level=4&Conn=3&DownTypeID=3&GetDown=false

You'll want to turn the game's "Use Hardware" sound option off since you don't have any real hardware acceleration.