Hey all,
 
(I apologize for the length of this post!)
I've recently been having problems with my computer to the point that it merely would turn on for a few seconds, then shut down and repeat the cycle. I could keep it going for hours and it'd continue to turn on and off, showing the same post codes of F3-F6-F3-F6. It all started when 8GB out of my 12GB of Corsair Vengeance 1600 1.5V RAM failed to work after taking them out when I tried singling out a problem I had beforehand with one of my video cards dying. Meaning I had Dual Sapphire Radeon 5770's (one older, one brand new) until one decided to quit on me instantaneously overnight. I didn't know what happened or that the EVGA X58 FTW3 boards showed "Postcodes" which helped identify the problem until after I took the memory out and still nothing worked. So, I just switched my display adapter to the other card and I could see everything again, but the only thing was, I was only using 4GB of RAM...
It left me confounded, wondering how merely taking memory out then reinstalling them would make them fail, so I assumed that it was my fault, having "shocked" them. Two weeks ago, I bought new RAM of the exact model. They came in last friday. I decided that I would install them after I used the 4GB stick I still had left to figure out if it was the memory slots that had gone bad or the memory itself. When I tried POST'ing after reseating the single RAM into each slot, neither worked, so I put it back into its original slot (#5) and it still didn't POST, and it proceeded to show the Postcodes 00-E8-01-62.
Immediately, I went to my father, who put my computer together and was of virtually no help to me now, said to clean out my computer. So I did that with compressed air. I brought it back in, stuck the new RAM in and turned it on... A few seconds go by, it shuts down, then restarts on its own showing the codes stated in the first paragraph.
 
I already called EVGA, and the board has already been shipped back as RMA so I can't do anything.
I also called Intel, and they said they will RMA the CPU as well, but the Support lady said I need to buy different memory because apparently mine was incompatible with the CPU I have, which is the i7-950 LGA 1366. This doesn't make sense. It was working perfectly fine before, and I didn't start having problems until after I took the memory out of their slots, plus the RAM I bought said it was i7-compatible, What Gives?!
 
I am unsure as to which computer component is at fault here, so I've decided I'll narrow it down by RMA'ing the prime suspects, and refunding my recently bought RAM so I can buy a more "compatible" RAM.
 
My question to you all is what RAM is compatible with the i7-950 and the X58 FTW3 board?
 
I know it has to be either 1066 or 1336 @1.65V (right?), but it's been difficult to find a good brand/specific product, and Intel wasn't very helpful... I will be calling them back tomorrow to validate the CPU RMA.
 
Anyway, any suggestions and/or comments would be greatly appreciated!
Again, sorry for the long post... Thought you all might need a background.
 
Thank you!
-Rochelle

It's your power supply, motherboard and possibly a bad stick of ram at this point.

Technically, all RAM is only certified by Intel for the 1366 chips at 1066mhz, at 1.65v. and lower.  Most people still run much higher than 1066mhz, though.  You can take a look at the supported list of memory for the X58 on EVGA's cpu and memory support list:
 
http://www.evga.com/support/motherboard/

Alright, thank you for the information!! It was very helpful! I found G.Skill Ripjaws 12GB that would go fine with my CPU.
 
But now my dad wonders if I could RMA my current CPU, instead of receiving the exact same model, upgrade to a CPU that does support my 12GB Corsair Vengeance RAM, and pay for the upgrade all the while?
I would have to call Intel on that one...

soccertripe :  The FTW3 mobo specs show that you can use 1600mhz RAM , and should be doing so - as if you installed any other lower speed RAM , you will be running them at maximum to gain performance from them.  The EVGA offering is the same as all other mobo's so that the user can use minimul cost and efficiency RAM (if they don't want to view 3D/1080p/24 video online etc. - some users only email and use a minimum of the mobo's capabilities).  It's simply not worth saving the $20-30 it costs to run the higher speed RAM if you want to use the full potential of the mobo during use.
 
Running any mobo with mid range RAM , is like buying a 65" Plasma HDTV , and connecting an Intel 256 computer with a 64mb video card - where the picture might be a foot or 2 wide in the middle of the screen.  If you prefer timings and settings of your RAM to be run at 1066mhz or whatever - you can always do that with 1600mhz RAM , but NOT Vice/Versa.
 
I have been running Kingston HyperX Blu DDR3 1600mhz RAM in my unit flawlessly for over a year now with no problems whatsoever.  And I even achieved 6-6-6 timings @ triple speed.  I highly recommend the Kingston HyperX RAM , as the quickest RAM timings are approx.  5-5-5.

Well, that is true for the motherboard, but the CPU it supports is the Core i7 LGA 1366 Series... I have the i7-950 of that series... And, according to intel, 1600Mhz is not supported by my CPU, and it only supports memory at 1066Mhz. Any memory above 1066 is considered overclocking (though I've never overclocked anything), thus voiding the warranty. I'm lucky they're actually RMA'ing this one...
 
I'll check up your  Kingston HyperX RAM, but I looked on the EVGA Support page under the motherboards and found that this RAM is supported by the X58 and the LGA 1366 Series:

...
Okay, well it seems I can't link the Newegg page of the RAM, but it's G.Skill Ripjaws Series 12GB (3x4GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3-10666)

soccertripe :  If you click on my Mod Rigs link (view my system list) , you'll see I am using the Intel Core i7 [Socket 1366] 950 CPU , and have been since I built this personal rig.  Regardless , about Intel , or any other listings which denote manufacturers of RAM or CPU's - mine has not had any problems that I could even post about with the 1600mhz RAM [other than my previous 750watt PSU started to overheat when I installed the 2nd set of 6gb of Kingston Hyper X RAM.  So , I replaced the PSU within a day or so of operation].
 
Kingston HyperX RAM has been noted as the top performer in terms of data transfer rate.  And when I finally settled my rig installations on a more permanent basis after installing most of what I have now - it was never serviced or required anything for more than a year (other than cleaning perhaps).
 
It is when you go "off standard" or "off high end" , that you might experience some different intracacies where RAM is concerned , especially if the RAM is unknown or unlisted as "tested".  Bear in mind that these lists are subject to "tested components only" - at the time of releases/testing.
 
Most problems are a result of overclocking the CPU , but lots of problems can occur as a result of installing a very high end video card or especially in SLI / 3-way / 4-way , with less than "highest end" RAM.  The balance between the 2/sets [data transfer] , effects the CPU - which will ruin the RAM or cause a HD/SSD etc. problem.  It all makes it so that you have to basically start over , because it is of utmost importance that the components of a build be of equal or as close to equal quality and performance.  Then they can be adjusted as "a base" from there.  If you "imbalance" your components , any adjustments can result in adverse performance or states.
 
Slapping in 2 EVGA GTX 560's etc. into a rig with a Intel 950/960/980/990 , is NOT - all that is required to have a reliable , and GOOD rig.  This can be proved in consideration that some users can do better with an Intel 920 CPU.

Alright, I see what you mean...
We have the same cpu and board, it's just everything else is different. Lol
I have Corsair's HX 750W PSU (Professional Series), and my dad believes that 750w is too much (Originally, I was going to buy like an 850w or 900w, but my dad said that's WAY too much)... According to you, it seems not enough?
Anyway, I have one working ATI Radeon video card (through Sapphire), not Nvidia cards. Could that hinder the performance and stability, although my computer ran 10 months strong, with these problems and BSOD's not starting until recently? Since X58 boards support SLI better than Crossfire (Meaning, Nvidia usually pairs with Intel...)
 
I know that my graphics card is the true bottleneck of my system, but I don't have the money to pay for an upgrade...
I could RMA my PSU as well, but I want to narrow down all possibilities... Especially before this month is over...
 
I just want to play with the recommend specs and stock settings, no more, no less. I just want to play BF3 and MW3. Those are my highest demanding games... (BF3 more than MW3)
Nothing really complicated. Being without my computer is very hindering! 

 
With the post codes you listed above it sounds like a ram/IMC problem.  It could be your ram, the cpu imc or the motherboard.  I got a few things for you to try:
 
Install on stick of ram, turn off your pc, unplug it, and pull the bios battery for at least 10 minutes.  Reinstall the battery and plug, and fire it back up.  Boot to the bios and set the ram manually to the manucturer's specs.  I don't know the exact ram you have so just as an example the timings will be listed as something like this: 9, 9, 9, 24, 2t (or 2n) 1.5v, those will be listed in the bios under memory configure as "tcl, trcd, trp, tras, and the command rate". They should be set respectively. The rest left on auto.  Set the multiplier to 2:10 (or 1333) and the voltage to 1.5v.
 
Check the ram slots and make sure there is no debris stuck in there.
 
If nothing, then reseat the cpu and check for bent pins in the cpu socket.
 
If you have the lifetime warranty on your motherboard, and you have RMA'd before,  there is nothing stopping you from rma'ing again if it points to the board.  Which it might.
--------------------------------------------
 
X58 boards are no better at Sli than Crossfire.  It will work the same.
 
Your Corsair HX 750 is more than enough for your setup, and will be fine even if you wanted to upgrade your gpu down the line.  It will power any single gpu out now easily.  Thats if it is working ok.
 
 

soccertripe :  It's a little late , but the very first thing I would have done after your first experience with the system shutting down after a few minutes of operation after posting , would have been to note "where or when" the shutdown occurred.  What I mean is : were you at the desktop , or did it shut down when you clicked to open your online browser , or were you just navigating your system?  This matters a bit.
 
At any rate , if this repeated itself - the very first thing you should do is :  unplug the unit and take out the video card/s.  Inspect the area for dust buildup and note where that buildup is before blowing it out.  Sometimes video cards can be very close to the Southbridge chip and the CMOS battery , while they also have a "hotspot" in the same area of the video card.  This is why static causes dust or lint to collect there.  In which case , I would replace the CMOS battery after cleaning - then reassemble the video card setup and repost to note any changes.  If this senario was ignored during operation , it could account for your RAM going bad , your CPU going bad , etc. 
 
It would be helpful if you could list your components , or fill out your MOD RIG listings , so that we can see what components are being used together. 

Alright, I've already RMA'd my board so I can no longer mess with it...
Hopefully it goes through flawlessly...
As for where and when, I was at my computer. It was working fine the night before with its only 4GB Stick working out of the 12GB (other two sticks), and I decided the next morning to install the new sticks.
So I did that, unplugged the power and such, didn't even turn my computer on beforehand to see if it would POST or not, so it did not randomly shut down on me while I was on it or while it was booting up since I never tried cuz I knew if I turned it on, I wouldn't have wanted to shut it off again to install the new RAM and fiddle with it.
I was afraid I was going to mess it up by trying again, and it seems I messed it up.
I always wish I didn't pull that last stick out, because I would be playing games on it right now, being okay with my 4GB (though slow!) and not be sitting on this old laptop asking what to do... lol...
I'll post up my Rig soon!