No sound for some reason i cant hear any sound on my laptop...and before i could hear any sound.. then i was on my sound checking the volume and i accidently changed something on it and now there is no sound i really need a step by step to find out how to get my sound back.. and if u have any other suggestions that would be great too thanks p.s . please hurry

If you have no sound, there are several reasons. First, the sound may be turned off. Check the sounds icon in the control panel. Check to see if your laptop speakers are the default playback device and make sure they have not been muted. Check the little picture of a speaker in your system tray. Click on it to see if the volume is too low or the little mute square is not checked.
Rarely is the problem defective speakers--rather it's muted volume or the wrong playback mode being chosen. For instance, if you have a set of earphones and you can't hear sound from the speakers, you probably will be able to hear it through the earphones.

Restart your laptop, also make sure the unit is not muted. Check volume control and unplug any headphones/speakers. Lastly reinstall the sound drivers. You can get these from your laptop manufacturers website. Cheers, Ravi Shanghavi

Not to sound silly but did you check the volume on your computer device, did you make sure the mute buttun wasn't on

Right click on the speaker icon in the task bar, lower right hand corner of the screen.
Select "Adjust Audio Properties."
In the popup box, go down to "Speaker Volume." Click "Advanced"
In the new pop-up, make sure that "Laptop speakers" is selected. Click all the OKs you need to in order to establish that setting and clear out of "Adjust audio properties."
Now you SHOULD have much better sound from your speakers.
For some reason, my D250 keeps defaulting to "Stereo headset" which produces much lower volume sounds when a headset is not inserted. So low that you can't watch and hear a video through the speakers and understand what is being said. Once you switch to "laptop speakers" you'll be able to hear stuff. It won't be high volume, these things just don't put out high volume, but it will be reasonably audible, if this was the problem.

click right mouse click harddware -divece manager look sound option (speaker sign} if not stall u can see yellow sign,install sound by using ur board cd. 2/ go run type control click sound andaudio option then u can get volum/sound/audio/voice/hardwer option check if incorrect correct it .3/ look ur speaker's volum is off or not? what u keep volum on mute or not? ..... thanks

Firstly, try removing/uninstalling your audio drivers, then reinstalling those.

Unplug speaker connection. Go to Control Panel, double-click on "Sounds and Audio Devices" and on "Volume" tab make sure "mute" is not checked and that volume is sufficiently up there. If thats ok select "Sounds" tab and go to "Program events", select any Windows sounds and check to see if you can hear the sound by clicking on the arrow next to it. If you can hear sound its ok so then check your speakers connection to correct sound output jack and that external speaker is powered on.

There might be number of reasons
1) check your sound drivers are good. Start-->run--> type devmgmt.msc and check if u can see any yellow mark on sound devices
2) in control panel go to volume control and check if wave bar in not at bootom or mute button is not checked.
3) Go to start-->run--> type services.msc, check in windows audio if service is not stopped if its is then restart this service.
Hope it helps !!
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click on start go to control panel
click on sound and audio devices
make sure that the mute option does not have a check mark next to it
and put a check mark in the box which says place volume icon in taskbar
click on apply
then ok
then check if you get a volume icon and do check the sound

Just reinstall ur sound drivers again ... it will reset it to default!!!