Recently, while playing unreal tournament, I realize there was no sound coming out of the speaker once I unplugged my headphones. I restarted thinking that it would fix the problem, but that didn't help, so I decided to uninstall and reinstall the sound driver from realtek, no good either. Finally I deicided to reformat my computer using the recovery partition. Reassuring myself that this will definitely solve the problem I was shock and confuse as to why no sound came out of the speaker after the recovery. After going to the Realtek sound control panel I realize that the computer thinks or detected that a headphone was plugged in when clearly it wasn't. The sound does work with the headphone in and I am sure the speaker is not damaged because the POST sound, "boommmmm", comes during bootup. I really don't understand what is going on, and I already reformatted the harddrive 2 times. I have read that the problem can be temporarily solve by replacing the motherboard, but after about a week or two, the same problem will arise. I have also read that other brands including HP, DELL and Sony has similar problems. I can live without the speakers but I am not sure if further problems will persist with this laptop, since its only been month that I have purchased it. Thanks for many reply/help.