New computer won't boot no matter what I do

perhaps the ram you are buying is incompatible with your board. Did you check the manual? please post both ram model numbers.

Manual

You need
-DDR3 DIMM
-Non-ECC
-Un-Buffered
-Below 1.65V


You may also be installing them wrong.

Your motherboard recommends running a kit of two in slot 2 and 4, or a single stick in slot 2.

Seems like the fury ram should be ok.

You may also be installing them wrong.

Your motherboard recommends running a kit of two in slot 2 and 4, or a single stick in slot 2.


"In the manual under 1866 MHz, Kingston 2x4 GB is listed but not 1x8. Is that why?"
I don't understand what manual you are referring to or what you are asking with this question.

"The CPU+mobo need a bios update, and the RAM isn't compatible at all...?"
How did you come up with this? There is pretty much no chance it is your mobo since you already did an rma. how would it be cpu/mobo if your motherboard is giving you memory codes?

make sure you fully press in your RAM with a bit of force until they click in.

try using only 1 stick.

Remove all the RAM, boot and listen for any beep codes from the Mobo speaker.
No RAM and no beeps indicates a Mobo problem.

First of all you can check in the manual what type of memory is supported.
Also the manual will tell you what the maximum density each memory slot of the motherboard it will take.
Depending on what model of the board you have and the main chip set of the board and the memory controller fitted.

On most new boards the Maximum amount of ram if 32GB will be a Capacity of 8Gb of memory per memory stick in a slot on the motherboard if you have four memory slots.

Now as mentioned why the board throws up a memory error will be down to the position or the memory slot the memory stick is placed in the motherboard.

So you need to check in your manual for the placement of the memory stick depending on how many you are fitting.
Or it will result in a memory read error.

The other thing to check is in your bios. on some motherboards you have an option to set on what type of memory you are running. if there is an option in the bios for the memory as EEC mode, and you have memory that is unbuffered Standard memory that you have, then you must turn off the EEC option for the memory if the option is set to that mode in the bios. Or it will produce a memory error also when the board first posts and does a memory scan or a test.

If you only have one single memory stick in the motherboard memory slots say an 8gb memory stick. In the bios you must select the memory channel mode.
For a single memory module you want single channel mode selected, and for two or four memory sticks fitted dual channel mode.

Do not mix two memory banks with two memory stick and the other two memory banks with a single memory stick in the memory slot.

It will confuse the memory controller of the motherboard and also produce an error code. because it will be in conflict on what memory mode to choose and have a fight between selecting Dual or single channel memory mode producing an error.

Three memory sticks for example would be set to in the bios single channel mode.
And the placement of each memory module in each memory slot of the motherboard would be denoted in the manual for proper detection with out an error occurring.

If the memory uses or has XMP mode you must set this option in the bios. because there is a voltage difference from Xmp enabled memory modules to standard memory modules and speed 1.5v to 1.55 for none xmp mode and 1.65v for Xmp enabled memory modules. if you fail to set this option then the memory may be under volted and failed to be detected or auto set up by the bios.

As said the memory slots of the board may not take a ram stick density of 8gb per stick there for it will not be detected by the bios. so you need to check what density of ram module or memory stick each memory slot of the motherboard can accept and read in the manual of the motherboard. If it turns out to be the case. then take the 8gb single stick back and get a 2 x4 Gb memory stick package, and set the memory mode to dual channel in the bios.

that board only takes non-ecc. dont worry about the bios setting.

did you try the configurations i recommended?

"Your motherboard recommends running a kit of two in slot 2 and 4, or a single stick in slot 2."

You are going off track. If your board is giving you an error code for ram it is not a psu issue. also, you dont need to disassemble your machine.

Try this guide:
http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems

Well, youy need to check the beep codes (google it) to know what they mean.


Otherwise it is possible that both RAM are defect.