No power I plug in other speakers while system was on.

There may be many different power supplies that will work for your speaker system, but they must comply with the following:
1. The output voltage of the power supply should be correct as what the speaker system requires. (seems like 12 V in your case)
2. The specified maximum current output of the power supply should always be a higher value than the Amperage spec of the speaker system.
3. The output wires or pins of the plug on the power supply should correspond to the (+) and (-) on the power input of the speaker system.

A multimeter will come in handy to determine a power supply's output voltage and polarity.

Check that the speakers are powered on (assuming they need power) and that the volume control is set at a mid-level.Next check that you have the speaker 3.5mm jack plug inserted into the correct speaker socket on the audio card - there are normally three sockets, one each for a microphone, speaker or headphone output and for line output - these are often colour coded on newer systems and if so, match the colour of the speaker jack plug to the speaker socket.If the speakers are connected by USB instead of an audio jack plug, then check to see if the USB device has been recognised automatically - if not, then you may need to find any software that came with the speakers and install this before the system will recognise them.Finally, open the system audio controls and check what device is selected for audio output - ensure that this is the same as the speaker device you are wanting to use.One further test, if you have the speakers powered on and they have a standard audio jack, you should hear some feedback sound if you touch the contacts at the end of the jack plug with your fingers.

*Turn off your Dell laptop.

*Connect speakers to the speaker control box. The speaker control box varies depending on the speaker system you have. Two-speaker systems will have a female jack on the back of one speaker that you plug the other into the second speaker. If your system has a sub-woofer, all of the other speakers will plug into it. The connecting cords are color-coded to the jacks on the back of the control box.

*Plug an audio cable into the "Audio-In" port on the back of the control box. If the audio cable is color-coded, it will be green.

*Plug the other end of the audio cable into the headphone jack on your laptop.

*Plug the speakers' power cord into a surge protector to protect your system from power surges. *Plug the surge protector into a wall outlet.

*Turn on your speakers and set the volume at a medium level. Be prepared to turn the volume up or down after you turn your laptop on.

*Turn on your laptop and confirm that sound is coming from your speakers.

Thanks for rating

Good luck

Try reversing the polarity (orientation) of one AC power plug at a time.

Always be the audio amplifier IC damaged

This sounds like a bad power supply, or missing earth?

Unplug the speaker plug and the power plug. Let it sit for a minute. Plug the speakers in and then the power and try again. Hope this helps.I have seen this many times and this is usually the solution.

I had exact same problem today. I moved my speakers from one room to the next. When I plugged everything back, the mute/unmute worked but the volume control no longer worked.

I got it working now!! I powered down my computer and then unplugged the power to the speaker system. Then plugged in the power to the speaker system again. Powered on computer and all is good again!!

Hope this helps/

i believe that plug is special because it feeds not only audio signal but also voltage to power the speakers. so unless u know that the speakers will get power from the plug, it will probably not work

Er so you plug the speakers into anther system and they work? Blindingly obvious but there is no fault with the speakers.