I tried looking at a movie on my lenovaG530 but

Could it be the movie has bad sound recording?

Sounds like a video memory problem. You may need to upgrade. Also be sure you have the latest version of silverlight installed.

first try to check if you have a sound driver.... if they have try to update...., if doesnt work try to connect usb powered speaker.....then try again to play a cd movie that you want.....

If you cannot hear the sound you have recorded. Make sure that the sound you record generates the visual pattern. This confirms that at least your microphone is working.

• In any of the upper case your audio driver must be install and your audio hardware must be in working order. You can check this in Windows Device Manager. To go to device manager you right click "My Computer" in XP and In Windows Vista and Windows 7 its "Computer. After right clicking it select Manage and on the left pane select the Device Manager and you will see the list of devices and their installed drivers. Make sure all the audio devices and there drivers are not showing any errors.
• Make sure that you speakers are not mute. If you take a look at the bottom right corner of your computer screen you will see a speaker icon.make sure there is no "X" or any other RED signs on them which represents mute states.
• Similarly check other related settings. Go control panel after going to the start menu and look for the "Sound" icon and make sure there is not anything suspicious.
• If all the above is fine and okay than look for any problems in your speakers that are open or if you are wearing them as Headphones or earphones and try to replace them to test them. Maybe the sound is coming but the speakers might be faulty make sure you increase the volume of the speakers when you hear any recordings.
  
• Make sure the speakers are okay by listening to music or movie that you might get free from internet or in Disk collections. This is the way you can easily detect the problem.
• If you can hear sound from music and movies than your microphone hardware might be faulty.

Good Luck!

It sounds to me like a codec problem, read this blog, it talks about the codecs you need

http://simontodd.com/2010/02/how-to-fix-the-problems-when-playing-a-movies-on-my-pc/

Most digital HDD sony handycam video cameras encode MPEG-2 files in 5.1 surround sound audio. You probably are not hearing sound because your playback software does not support 5.1 surround sound encoded MPEG-2 files. Try using a newer peice of software with the latest codecs installed.

I had the same problem and found that there was a connection problem with the center speaker. Do a sound check on all speakers and see if the sound is coming out of the center one. If not then just check you have connected it properly.

This camera does record sounds. But, it doesnt look like it has a speaker in it to play them. So, yes unfortunately you wont be able to hear what you record unless you are using something else to playback what you have recorded.

Good Luck.

You cannot hear the sound while the video is in the camera.

This model of cyber-shot has no speaker on board to listen sound in playback mode. you need to transfer movie file on PC to hear sound in it.