It about mixer device

The Problem> Sound: Placing the mouse pointer over the ICON to the lower right of your screen should indicate the percentage of Volume your speakers are adjusted for. Right click and you get the Open Volume Mixer section. The playback devices can be your computer speakers or a separate headset with microphone. Here you can make adjustments accordingly. At the bottom are Volume Control Options that allow you to increase or decrease the audio reception. Generally, when you insert an external Headphone with Microphone into the sound port in; an automatic disconnect may occur preventing computer speakers from working. This is common with Laptops. If you lack sound, you may need to update the sound drivers, change cables, and/or check to see if the speakers work on another device.

What type of laptop HP , ASUS , COMPAQ , ACER ?..........
Up the Volume on My HP Laptop
Open the "Start" menu and click on the "Control Panel" icon.
Locate and open the icon that deals with sound.
Depending on your version of Windows, it will say either "Sounds and Audio Devices" or "Adjust System Volume."
Adjust the volume under the "Speakers" icon.
To do this, click on the slider bar and move it up on the slider.
If you need to decrease the volume, simply move the slider bar down.
Click on "OK" when finished and close the "Control Panel" window.
Click on the speaker icon in the bottom-right corner of the screen for a faster volume adjustment. Simply move the slider bar up to increase the volume and move it back down to decrease the volume.

Volume on an Acer Laptop
Acer laptops are typically sold with pre-installed Windows operating systems that offer sound-adjustment features for increasing the volume on the laptop's built-in stereo speakers.
These same functions can also be used in tandem with external speakers or headphones to increase the volume, as well as mute all sound on the laptop.
If the computer should output an unusually low volume, fixing the problem may be no more involved than sliding a control switch with the computer mouse. Click once on the speaker icon in the taskbar on the lower-right corner to open a rectangular window with a slide control.
Click and hold the left mouse button on the slide control to drag it upward, increasing the volume to the laptop's maximum setting.
Click the "Mixer" button below the slider control to open another window with volume controls for "Speakers" and "Applications," adjusting each slide control upward to increase the volume.
Be sure the speaker icon below each control is not accidentally muted.
Click once on each speaker icon to remove the red circle with a slash through it, which will restore audio.
Click the Microsoft flag or "Start" button in the lower-left corner if the shortcut speaker icon is missing from the taskbar.
Click "Control Panel" to select "Adjust Sounds" from the Hardware and Sounds category.

If someone can't increase volume and decrease it from remote (I assume batteries and technically the remote is ok and everything else works on it), just mute and unmute and now Onkyo will let you increase and decrease volume from the remote.

Fn + Esc Put your computer in sleep mode.
Fn + F1 Enable/disable the built-in wireless internet.
Fn + F3 Mute.
Fn + F4 Enable/disable the touch pad.
Fn + F5 Shift to other connected display devices, i.e. another monitor.
Fn + F6 Decrease display brightness.
Fn + F7 Increase display brightness.
Fn + F8 Decrease computer volume.
Fn + F9 Increase computer volume.
Fn + F10 Turn on/off the LCD screen.
Fn + Ins/NumLk Enable/disable the Numeric keypad

Press and hold the "Fn," or function, key on your EEE PC-1000's keyboard.

Press "F3" while holding "Fn" to lower the brightness on your monitor.

The brightness on your computer decreases each time "F3" is pressed.

Press "F4" while holding "Fn" to increase the brightness on your monitor.

Each time "F4" is pressed, the brightness increases.

Press "F8" while holding "Fn" to decrease the volume from your EEE PC's speakers.

Each time "F8" is pressed, the volume decreases.

Press "F9" while holding "Fn" to increase the volume from your EEE PC's speakers.

Each time "F9" is pressed, the volume increases.

Press the "Ins" key while holding "Fn" to take a screen shot, or make a copy of what is currently on the computer screen.

hope this helps

click start control panel sounds and audio devices you can adjust the volume there also select speaker volume you can change your settings there you can also tick in the box place icon in taskbar
hope this helps

yesterda i ve repaired a laptop with the sam problem. i hav done all reinstallation of windows and drivers.
but this is very funny when i found that the inbuilt key of laptop volume control was pressed automatically so when i try to decrease volume it increases automatically.
so please check for your touchpad drivers and check that any key is not jammed in laptop/desk top.
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There are 2 types of volume in your nokia phone that you can increase or decrease.

The first one is the ring tone volume. You can either increase or decrease your ring tone volume by pressing the menu key then go to settings, go to profile, select any desired profile go to personalise go to ringing volume, then increase or decrease by using the navigation button to the right or left.

The second way is to increase or decrease the volume of the speaker of your phone which i think is the cause of your question (this volume enables you to hear clear and loud the person on the other phone). You increase or decrease the volume by making a call, as soon as the call starts ringing, press the navigation key to right to increase the volume or to the left to decrease the volume.

I have nver come accross a setting that will lock the volume to a set level before, but here are a couple of possibilities that you may want to investigate for the cause.

1. Not all programs use the master volume control, so do, but most adjust the sound by the wav output. Put the mixer onto the desktop, open things like winamp, media player etc and adjust the volume controls on those to see what is doing what.
2. If you have a multimedia keyboard with a volume control on it, make sure when your typing it's not adjusting the volume at the same time. Again, put the mixer on the desktop out of the way and type as you would normally. It could even be just the vibrations from typing setting it off.

See how you go and post back your results

Double check your connections. Still not working fine. Remove the input jack connector and try to touch or hold the tip of the connector, also adjust the volume of the speaker, you should heard loudly the 60 hertz sound of your body signal. Otherwise you have a defective amplifier in the speaker system.