left speaker not working but right speaker working on my PC , please help !!

[Muhammad Zulfikar]

last time i do to my pc is dissasemble it , cleaning all parts, change thermal paste on processor and then installing my new VGA. after that i try to turn on my PC and the left speaker isn't working, i try my speakers to my laptop the both speakers is working. and then i try to uninstalling audio driver and installing again but the left speaker still not working.and the last i buy headset and soundcard adapter with usb i but still the left speaker not working. 🙁
my motherboard is : BIOSTAR HI - FI A85s3

Please,Help !

 

[Muhammad Zulfikar]

this thread already closed, the problem is the audio jack connector, i try to use my headset again with soundcard adapter and it working, i forgot balanced the sound in winamp so i think the left headset speaker not working. 😉