No Sound from Speakers but Headphone working fine: HP 4530s ProBook

Hi,

I am using Windows 7 on  HP ProBook 4530s,  Product No LH455EA#ABV. Yesterday I found my speakers are not working properly but when I plugged in Headphone I can hear sound properly.
I tried different solutions already present on this forum but so far neither of them work for me. 
I followed instructions mentioned here and found out that I can not hear Test sound from speakers, however test sound from headphone works fine. I tried updating drivers but even after that problems exists. I also tried MSFIX but it just updated drivers and showed problem is no more, which was not true.

Can someone please help me to solve this problem. I am attaching few screen shots may be that might be helpful.