I can not hear any sound and the speaker icon is missing from the tool bar

At the top of your keyboard you have some icons with pictures of some speakers. One shows 3 curves coming out of the speaker which signifies the loudest sound, another shows a speaker with just one curve in front of it which signifies low sound, and the 3rd speaker has an X on it which signifies no sound. Click on the speaker with the most curves to control the volume. Also, at the bottom of your monitor you have a picture of a speaker with curves in front of it. Click on that icon, and you will see how much sound you have. To make the sound louder, click on the bar with your mouse and raise it up to increase your sound. It should also tell you the percentage of the sound that you will hear. To lower the volume, click on the bar and lower it.

what do mean of missing multimedia audio controller? the one that speaker icon on the lower right of the monitor or driver for the multimedia? Go to control panel then sounds and audio devices then on the volume check the Place volume icon on the task bar... hope this will help

1) Next to the Time and date in Windows Operating system, click on the down arrow button in windows 7,ensure the Speaker Icon is there,
2) Left click PC mouse on the speaker icon to ensure that the volume of the speaker is not muted. Increase the volume bar gradually and test sound by playing sample video files in windows media player
3) If Speaker icon is missing reinstall sound drivers, and restart the PC to enable the sound
4) Call the direct PC manufacturer if suspected faulty hardware issues on sound devices

Open control panel/click sound icon/first tab speakers/there is a switch to click off/on for desktop screen bar (Or something like that?)

Right Click on the speaker icon on your desktop in the lower right corner. Open volume mixer and slide bar upwards to increase the volume.

Could you be a little more specific, is it an on board audio? Audio card?
Try this as well could narrow it down to hardware - use headphones in the input jack and see if you can hear anything, also click on your speaker icon bottom left on tool bar and see if it is on mute.

click on the icon in your tool bar on bottom of screen. This will take you into your sound settings. Then you can unmute them. If this does not work then you will need to re-install the sound drivers

There are some basic thisngs you can do:
Go to Control panel
Double Click on Sounds and Audio Devices
Make sure there is no check mark in the mute section where there is a volume adjustment for your speakers.

Also ensure that your speaker volume is up to an appropriate level.

If you look for the speaker icon beside the clock and double click on the icon it should bring up a sound tool bar with many sliders. Maker sure they are all at a volume that you would be able to hear audio. Also check to ensure that there are no check marks in the mute section of each catagorie.

Having done these steps if the issue is not resolved it could be a driver or the hardware.

Good day!
Please check the cord of the speaker if it is inserted at the right socket of your unit, or was the audio driver was installed? check if you see a speaker icon at the task bar. If you see an icon (speaker) maybe the speaker was not activated, double click that speaker icon, then, see if the volume was check, or other options, if none click options, properties, try other options by checking the box.
Thanks hope can solve your problem.

Its easy. Jus from task bar click on that Speaker Icon of sound. In that you can select the left channel, right channel or both! Keep the pointer in middle and you will get sound in both the channels! Enjoy