The problem can be with any (or all) of your hardware components.
With all hardware removed from the motherboard, carefully inspect everything for signs of burning or physical damage.
There might be damage on the underside of the motherboard.
You should remove the motherboard from the case and place it on a cardboard box next to your computer case.
Do NOT put an anti-static bag or any electrically conductive material under the motherboard.
Do you have access to any spare hardware that you can test with, such as psu, memory,cpu, etc.?
Getting a case speaker could help diagnose where the problem is. Try a local electronics store.
We can best help you after you create a detailed hardware list in the PC Specs portion of your forum profile http://forums.tweaktown.com/profile.php?do=editprofile at the bottom of the profile page or in your forum signature http://forums.tweaktown.com/profile....=editsignature.