It appears you have the video card installed in the SECOND PCI-E X 16 slot.
In most cases, you MUST install a single video card in the FIRST PCI-E X 16 slot, the one closer to the cpu.
ALWAYS unplug the the AC cord to the power supply, or otherwise switch off the AC power to it, whenever you are plugging in or unplugging any component onto / from the mboard, or when you plug in or unplug any wiring from the power supply inside the computer case.
If the video card has a socket on it for extra power, there must be a connector and wiring from the power supply connected to that socket.
If having the video card in the FIRST PCI-E X16 slot doesn't make the system boot normally...
You can't hear mboard beeps unless you have something connected to the mboard that can produce the beep sound.
For most recent mboards, you must connect the computer case speaker, or some other sound producing device, to a certain two pins on the mboard.
Did you do that ??
See your mboard manual if you did not.
The short answer.
Your problem MAY be because of incompatible ram.
Assuming nothing else is wrong, the ram you have installed is NOT listed as compatible (by Corsair) with using it in your mboard !
If a particular ram module part number, or the part number of a ram module set, is NOT listed by the manufacturer of the ram modules when when you use the mboard model to look up which ram is listed for ( = is compatible with) the mboard model, then there's NO guarantee that it will work properly when installed in your mboard.
It is easy to test for incompatible ram that has caused your mboard to fail to boot.
Make sure you have a speaker or speakers or the equivalent connected to the mboard so you can hear mboard beeps (see your mboard manual if you need to).
Remove the AC power to the case/power supply.
Remove all the ram.
Restore AC power.
Try to boot.
If nothing else is wrong, you will get no video but you will hear a pattern of beeps that indicate no ram is installed, or a ram problem.
E.g. for an Award bios or a bios based on one, that's often a beep of about a half second, silence for a half second, a beep of about a half second, silence for a half second, continuously.
"This motherboard has three slots, and one additional black slot making it total of 4 slots. Do you know if I have to use the black slot? The rest is blue."
The answer to that is found by going to a link found in the main mboard manual.
Memory configuration examples
Triple channel ram is installed in the blue slots only
"I plug in the rams only in the three blue slots."
The ram should work, IF it's compatible, and IF it's all the way down in it's slots.
Corsair ram for your mboard model:
"TR3X6G1600C8D Dominator 6 GB 3 x 2 GB PC3-12800 1600MHz 240-Pin DDR3 Core i7 Memory Kit"
That's not listed.
TR3X3G1333C9 DDR3-1333 (XMS3-10666C9*3CH) 3GB Kit (3 x 1GB) 1.5v 9-9-9-24-2T
No PC3-12800 (DDR3-1600) ram listed.
DDR3 SDRAM Frequencies: PC3-6400 (DDR3-800), PC3-8500 (DDR3-1066) and PC3-10600 (DDR3-1333)
Crucial sometimes lists faster ram than the model's specs support, if it's otherwise compatible with using it in your model.
In this case, PC3-12800 (DDR3-1600) ram is listed, but it probably will run at PC3-10600 (DDR3-1333) specifications.
Intel® Desktop Board DX58SO (Support)
(Tested) System memory for DX58SO
No Corsair modules listed.
Supported Memory Configurations
DIMM Capacity Configuration SDRAM Density SDRAM Organization Front-side/Back-side Number of SDRAM Devices
1024 MB SS1 1 Gbit 128 M x 8 / empty 8
2048 MB DS2 1 Gbit 128 M x 8 / 128 M x 8
Compatible Processor(s) for Board "DX58SO"
"Intel Core i7 Processor i7-930 2.80GHz"
One of those , SLBKP, listed as compatible, min bios version 4021, all mboard revisions
19 bios updates listed
bios version 4021 Date:5/28/2009
"Date:5/28/2009" - mboards sometimes sit on a shelf in a warehouse for a long time before you buy it - but in this case it's likely your bios version is newer than that date, and your CPU should work fine.
The present bios version MAY be shown on the first screen as you boot, and/or it MAY be shown in the mboard's bios Setup; it MAY be on a sticker on the box you got the mboard in, but I've never seen that.
If the sticker on the box has a serial number, you MAY be able to send an email to Intel that has that serial number mentioned to find out which bios version the mboard has.
Main Manual Oct 2008
4 ram slots, from inside black Channel A Dimm 1,
blue channel A Dimm 0
blue channel B Dimm 0
blue channel C Dimm 0
Memory configuration examples
Triple channel ram in blue slots only.
Three triple channel ram modules in blue slots run in triple channel mode.
Two triple channel ram modules in blue slots run in dual channel mode
32 bit versions of Windows can recognize no more than 4gb of ram, because 32 bit versions of Windows have a 4gb virtual memory address limit for both the installed ram and the requirements of the operating system. You can't actually use all of the 4gb if you install 4gb (or more) - the amount Windows can actually use variesdepending on the system, from just under 3gb to about 3.5gb .
64 bit versions of Windows can use all of the ram installed.