I have seen similar problems to mine but not exactly the same. I am using windows 7 home prem. 64 bit Motherboard H57m01 with a Gateway dx4831- 01e. All drivers
are up to date as of 6-3-11. I'm new to the forum so please forgive any ignorance on my part. All was working fine until yesterday. When front jack detection is enabled with Realtek HD manager I can't hear my speakers, but my headphones work. When I disable it the speakers work as do the headphones if plugged in. The funny thing is when I enable the detection, it is showing that on the front panel headphone/ speakers that there is still a jack plugged in and also shows where I actually have the speakers plugged in and that is the rear jack. I assume that is why I can't hear any sound from the speakers. I don't know why it doesn't respond when I unplug the headphones. Note that it detects all of the other jacks when something is plugged in or unplugged. Any help would greatly be appreciated.