Cannot detect when a jack is plugged in.

Forgive if this is too simplistic, but 2 suggestions before digging into the laptop: Confirm that you are plugging into the headphone jack and not the mic jack. Second, try a different set of earphones - sometimes buds with a mic capability like for a cell phone don't respond the same as pure headset.

make sure the driver is correctly installed

You will need professional help on this, the laptop must be dismantled down to the motherboard level to access the problem. The earphone jack may have to be replaced and requires a high degree of solder skills to remedy the situation.

Hi

Have you tried swapping the jacks left to right or right to left to make sure that they are in the correct sockets because only

here the steps:
1. locate the earphone jack on your pc.
2. after finding the earphone jack from your pc you need a connector (baby stereo plug to 2xrca plug).
3.connect the baby stereo plug to your earphone jack and then the rca plug to your Pioneer axuliary in.

sure can, any standard sound amplifier can take a signal from the stereo earphone jack and amplify with fantastic results.

Just need to go to Radio Shack or Walmart, or another department store to get the right adapter (stereo to stereo, or stereo to mono) and cord.

Note the number of contacts on the earphone plug that plugs into the earphone jack. If it has three different connections on the plug, it's stereo. If it has only 2 then it is mono.

Most computers I know of have the stereo plug which works with stereo inputs of an amplifier.

So, the answer is a resounding yes.

Sounds as though either the earphone's Plug isn't the right size or plug end shape... OR the actual Jack is faulty, and only making intermittent connections... or the wire to them is broken. What is best is take the MP3 unit along when buying any head/earphones and try them in shop.. As for Walmart... Talk to a manager and demand a refund or a change of type... Don't take NO for an answer. Also you don't need to spend that amount for them... any cheap pair that works will be OK. Try before you buy.

In my case, it was solved by tweeking the sound utility, and not by touching anything in the computer:

1. Make sure "Realtek Audio Manager" is installed (should come with the drivers)
2. Start The "Realtek Audio Manager" (can do it by plugging earphones to the audio jack on the rear - the one the works)
3. Look for the configuration tab - something like "Connector Settings"
4. Set the "Disable front panel jack detection" checkbox
5. Press [OK]
6. Try again to connect the earphones to the front panel
   

See link from MSI forums:
http://forum-en.msi.com/index.php?topic=120665.msg911410#msg911410

it doesen`t do that on my computer either but i still get sound

Hey guys!
Since the internal speakers are working, the sound portion of your pc is set up correctly and working. That is also confirmed by the fact that the sound goes away when you insert the earphone jack.
That means that either your headphone jack is defective (I doubt that, since 2 of you seem to have the same problem, but possible), your earphones (or cables) are defective, or there is a compatibility problem with the earphone jack in the pc and the earphone plug on the earphone cable. Just because the plug fits the jack, doesn't mean that it's making the proper connection. I've been stung with that one myself, a time or two. That's about all there is to that circuit.

The only other thing that I might suggest is that you try to plug the earphones in, hold the Fn key while pressing the F8 key a couple of times. That key combination toggles you speakers on and off. Doubt that will buy you anything, but it's worth a try.

If you need any additional information, please feel free to ask. If this information has assisted you in the resolution of you problem, please return here to give my assistance an appropriate final rating. If this information has answered your question and/or lead to a resolution, please rate it as "Fixya!".
Thank you, and have a super day!
Ron-