My subwoofer is making a strange kind of noise n frequently it goes off by itself..this happened since the left front speaker started making some crakling noise every time n later the situation aggravated and nw its almost impossible for me to listen to a song or doing something as my subwoofer does a very loud noise n its jst too damn annoying!!!!

Hi

Good day. In regards to your issue your speaker connector might be grounded and there's no way to fix that i''m sorry. But try to do this step first to be sure

1.Make sure your speakers are plugged in, turned on, and properly connected to the
computer. You've probably checked this, but it's amazing how little problems like this (or the
computer's sound being muted) manage to confound people.

2. Plug the speakers in to another computer, if possible. If the speakers work with the other
computer, proceed to the next step. If they don't, you've probably got a problem within the
speakers themselves.

3. Check sound card driver
> Open your start menu (right-click on the "Start" button and choose "Explore"), and find the "My
Computer" icon. Right-click on it and choose "Properties" from the submenu. Click on the
"Hardware" tab and then the "Device Manager" button.
> Expand the "Sounds, video, and game controllers" heading to find your sound card. The name
will depend on what sound card is installed on your PC. It will most likely have a name
containing "audio." It should look something similar to the example above. You'll know
immediately if there is a major driver error because an exclamation point (!) will show over the
card's icon.
> Double-click on the name of the sound card to open a new window. In the new properties window
click on the "Drivers" tab. If there is no "Drivers" tab then you chose the wrong sound device. Go
back and try again. On the "Drivers" tab, click the "Driver Update" button. Follow the Wizard's
onscreen instructions to update your driver. You can also contact the manufacturer of your PC
for the most recent audio drivers. They can usually be found online.
> If you already have the most recent driver, click the "Uninstall Driver" button. Then restart your
computer. When you restart your computer, the driver should reinstall automatically. If it does
not, install it manually with software (or a download) from the manufacturer.

4. Check the "Windows Troubleshooter". On the "Drivers" tab mentioned in the step above,
there is a button for troubleshooting the device. Click on that button, and follow the instructions
on screen.

5. Check the sound card itself. Properly shut down your PC and then disconnect all cables on
the back of your PC, including the power cable. Open up the CPU, making sure to touch a
grounded metal object (a doorknob or metal desk will work, for example) before opening up the
case. This will discharge any static electricity you have built up, which could damage your
computer.
> Locate the audio plug on the back of your PC. The sound card should be in the corresponding
location on the inside of the PC. Remove the sound card and put it back in. The Microsoft site
has detailed directions for installing a sound card; to remove one, simply do the reverse. Once
you have the sound card back in, reattach the cables you unplugged earlier and boot your PC

It this steps didn't work you might consider getting a new one. Hope this help you in someway and thanks for visiting Fixya. Have a wonderful day.