I get sounds from my headphone but no sound to the speakers. The troubleshooter says the speakers not plugged in, but they are. Plug and receptacle colors match.
I remove the speaker plug and touch it with my hand and the speakers hum, so I know that from the jack through to the speakers are OK.
Disable the sound card and no sound from the headset, so the sound card is OK.
Do they work if you plug them into the headphone socket? Conversely, do your headphones work when plugged into the speaker socket? If you get sound when using the headphone socket but not the speaker socket, then you might need to check the internal wiring, in particular the connection from the headphone socket to the motherboard or sound card.
4 x 4GB DDR3-1600 Corsair Vengeance CMZ8GX3M2A1600C9B (16GB)
Graphics Card(s)
MSI GeForce GTX770 Gaming OC 2GB
Sound Card
Realtek High Definition on board solution (ALC 898)
Monitor(s) Displays
ViewSonic VA1912w Widescreen (VGA)
Screen Resolution
1440x900
Hard Drives
OCZ Agility 3 SSD 120GB SATA III x2 (RAID 0)
Samsung HD501LJ 500GB SATA II x2
Hitachi HDS721010CLA332 1TB SATA II
Iomega 1.5TB Ext USB 2.0
WD 2.0TB Ext USB 3.0
Found the problem. The green jack was plugged into the green receptacle. When I changed the green jack to the gray receptacle the sound worked. Go figure.
I'm pleased that you have resolved the issue. I note from your motherboard specs that you have HD audio. In most cases, the sockets can be reassigned so that the speaker output (which is normally green) can be any of the other sockets instead. Likewise, the function of any or all of the other sockets can be reassigned to different ones than is the normal standard.
Check the Realtek HD Audio Manager to ensure that the sockets are correctly assigned.
4 x 4GB DDR3-1600 Corsair Vengeance CMZ8GX3M2A1600C9B (16GB)
Graphics Card(s)
MSI GeForce GTX770 Gaming OC 2GB
Sound Card
Realtek High Definition on board solution (ALC 898)
Monitor(s) Displays
ViewSonic VA1912w Widescreen (VGA)
Screen Resolution
1440x900
Hard Drives
OCZ Agility 3 SSD 120GB SATA III x2 (RAID 0)
Samsung HD501LJ 500GB SATA II x2
Hitachi HDS721010CLA332 1TB SATA II
Iomega 1.5TB Ext USB 2.0
WD 2.0TB Ext USB 3.0