If i'm not mistaken, the first jumper is for keyboard power and the other two are for USB. These jumpers shouldn't affect your display (or lack of) problem.
If the system worked with the 1GB module and then no display after upgrading, there could be several explanations.
The following assumptions are made since the RAM modules are unknown:
1. Mobo doesn't support the 2GB module
2. Because of 1, the "stock" settings of the module could've been too powerful for the mobo
3. because of 2, the mobo could have been damaged
4. installing RAM while the mobo is mounted in the case can cause warping
5. faulty DIMMs are not uncommon, i've had two mobos with dead on arrival DIMMs
When building a new system, the best practice is to breadboard the components first, to ensure operation and integrity. In your last thread, you did not specifically say that you performed a breadboard. I would suggest you try it (again, if you already did it once) to rule out shorts.
Here are some "No Display" culprits:
1. Bad RAM/DIMM(s)
3. CPU molex not connected
4. Improper RAM configuration
5. Display cable loose
6. GPU not installed properly
7. Auxillary power cable not connected (may not be required)
8. PSU dead or dying
9. Insuffcient output (amps) from PSU
10 Bad display cable