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Try to use earphones, plug them in to phone audio connector....
try if it works..... if so, disconnect them and plug speakers.... and try again.... if doesn't work, go to audio advanced setup and check if speakers are not muted, or set up voicevolume level is too low. Play with that setup....
Also some computers can turn on or off speakers in Bios.
If problem will not be solved, try to use USB speakers
If you hear no sound coming from your speakers, there could be several reasons:<br />1) Check to see if the speakers are powered on.<br />2) Check to see if the cable is plugged into the speakers and the green jack in the back of the computer.<br />3) Check to see if the speakers are muted in Windows. Do this by clicking on the speaker icon in the system tray. It has a place to check to mute the speakers.<br />4) Check to see if the sound devices and drivers are loaded. To do this go to the control panel and click on "sound." Then click on the sound tab. Choose one of the Windows events that has a sound associated with it and preview the sound by clicking on the arrow to the right of the listing. If the arrow is dark and when you click on it the sound seems to be playing, then the drivers and sound card should be functional. If the arrow is grayed out, then your sound drivers are not installed. In either case, try reinstalling the sound drivers.<br />5) If you've tried all this to no avail, try with another set of speakers.<br />6) One thing that may work is to do a system restore back to the time the speakers were working.<br />7) If nothing works, I would suspect that you have a bad sound card. Unfortunately, these days sound is integrated into the motherboard, but you could install an add-on sound card.<br />
Check that your computer isn't muted and the volume on the speakers is up. Check that the plug for the speakers is connected correctly. Check to see if the sound card that the speakers are plugged into is set as the default in the control panel. Is there any sound coming out of the front port (earphones). Try another set of speakers.
First make sure your speakers are plugged in correctly, powered up, and turned on. I'm guilty of not looking for the obvious myself. Anyway, after that, make sure the sound is not muted on your computer. Next check to make sure your sound drivers are installed and that your sound card is enabled in the device manager.
Did you try your speakers on a different system or did you try a different set of speakers on your computer?
One thing that does cause alot of problems with sound are viruses, adware, spyware, malware, etc.
Several possibilities come to mind: speakers have failed (self-powered speakers have bad power brick, cable damaged, etc), speakers plugged into the wrong port (audio in instead of audio out), audio card or driver has failed.
If you recently had to restore your OS (or do a roll-back to a "known" good configuration), check your audio device (make and model) and make sure you have the latest driver installed. (Look at the website for your computer if it is a prebuilt system or look up your motherboard if it is an on-board audio device.) The device manager might have a yellow exclamation mark on the audio device if this is the issue (access from the Windows Control Panel)
Check for bad speakers by trying another set of speakers or plugging them into another computer. (Swap cables if that is possible.)
Make sure the speaker volume is turned up and also go into Control Panel, Sounds and make sure nothing is muted and all volumes are turned up. Also make sure the speakers are plugged into the sound jack in the back of the pc. The speakers also need power but since the light is on, it sounds like they are plugged in.
If so I can help you find sound drivers for it. You have to figure out if the speakers are the problem if you do not get an obvious error to indicate that it is a software problem.
Checked plugs to make sure they are in the right place?
Swapped out the speakers with a set that you know work?
Used headphones to make sure the sound is actually coming out of the computer?
Let me know the answers to these questions please.