For some reason, the icon for increasing/ decreasing the volume has dissapeared----i.e. increase the volume from 0 to 100

All motherboard volume controll with function keys, pls look into the function key where speaker icon is printed with + sign, to increase the volume with the Fn key and then press + vol key for increase volume and press - key for decrease volume.

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.

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

Cellphone volume decrease due to following reasons you can resolve if you go through it.

1.If you have recently changed any Cellphone Panel, you have to check whether Ear Volume holes are perfect or not..for new panels it wont have Holes proper make it clear.

2.Remove the Dust between Ear Speaker and Panel.

3.If you wan to Increase Ringer Volume check the Dust and Volume out vent gap is proper or not.

We cant increase default volume with any codes...

Cleaning the contacts may help. The volume knob should pull off. Once its off use a non-flammable contact cleaning spray to clean the contacts behind the knob.

Electronics and automotive stores should have this.

Most of the time their are multiple ways to do this.

1. On the speaker in the lower right hand corner left click and a volume bar appears. Slide it up and down. It should be adjust to 75% IMO.

2. On your keys there should be symbols that look like speakers that should match the color of you "fn" key. Press and hold the fn key and then press the corresponding speaker key to increase or decrease the volume.

3. There may be a rotary volume control on the front of the laptop case. It's as simple as turning it to increase or decrease it.

On the volume bar in windows verify that the muted in unchecked.

hi...

1.You have a side key for adjusting the volume of voice when on call.
top key for increasing the volume and lower one for decreasing

2.you want the ringer volume to increase please follow the steps

1.open MENU
2.Go to profile
3.Go to personalise
4.there is a option called as ringer volume.
5.increase and decrease the volume in it.
6.Save the changes

Thanx

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.

While making or receiving a call, there is a speaker icon at the top middle of the screen. Tap on it and you can increase/decrease the in-call volume.

Cellphone volume decrease due to following reasons you can resolve if you go through it.

1.If you have recently changed any Cellphone Panel, you have to check whether Ear Volume holes are perfect or not..for new panels it wont have Holes proper make it clear.

2.Remove the Dust between Ear Speaker and Panel.

3.If you wan to Increase Ringer Volume check the Dust and Volume out vent gap is proper or not.

We cant increase default volume with any codes...