There are several reasons why your laptop speakers are not working.  On very common reason is the mute function.  As easy and simple as this may sound, you’d be surprised how many people forget to turn off the mute button.  Another common reason is due to driver related problems.  If you have thoroughly tested your speakers and you still get no sound, you can try reinstalling the sound driver.  Sometimes due to software issues, the drivers of your laptop can get corrupted.  When this happens the on board devices, in this case the speakers, can malfunction.  Try updating or reinstalling the driver, this should solve the problem.  If not, you will want to consider replacing the speakers.  This involves laptop disassembly and should only be one by a professional or user with technical experience. 

If you are able to do this yourself, you will want to locate the speakers and find the part number.  With the part number you will be able to find the correct replacement speakers.  Sometimes speakers get damaged due to liquid spills or static shock due to accumulation of dust.  Once you replace your speakers it should solve the problem, if not you will want to consider replacing the entire main board.  Although rare, there are cases where the on board circuits that contribute to sound get damaged as well.  The only way to repair this is by replacing the motherboard or by board level repair.  If you need help with identifying the problem with your laptop speakers not working do email us and we will gladly give you free advice.