Hey, what did you have the ram in before and what speeds did you achieve? Have you any other ram you can test to make sure it's just the ram?
I'm using the same ram and I have no problems whatsoever with ram runnin 1000Mhz right now on GEIL Black Dragons/Evoone. I've clocked it and passed post all the way up to 1224Mhz so the board doesn't really have ram issues that I've run into (unless you're mixing ram then that's different).
Also what clock are you running your 5000BE right now and how is it achieved (HT Bus or Multiplier)?
I see you have a 3850 256Mb card in there...I do believe those are PCI-E 2.0 capable correct? If so then you'll need to make sure that you actually ENABLE that in the bios otherwise you're not getting the full power of the card.
Let me know and I can give you all the steps to make sure it's correct (check it out in GPU-Z when done). If you haven't set it up and you know the card is 2.0 capable then it IS NOT running that speed by default because that's turned off stock.
Oh, just looked at yoru screenshots and saw your running a 250 HT Bus speed (me too) with a 12x multi (me too again ;P). If so I can't remember what divider you'd be using but for me that's 1000Mhz (due to Phenom). Actually I just pulled up an AM2 memory calculator (can't find my charts) and that's STILL 1000Mhz even for what you're using.
Maybe try 214HT Bus with 14x multiplier and that should give you 428Mhz ram speed and 2.996Ghz cpu speed. That may boot up for you but I'm not sure what voltage your particular ram may need in order to boot up higher than the normal 400Mhz but that's a pretty modest overclock so you might be just fine with it. Just make sure your timings are "loose" to ensure it's not a timing issue perhaps try an easy 5-5-5-15 2T and see if that works.
Make sure though FIRST AND FOREMOST you set the option for 2T Mode "Enabled" not Auto or Disabled. If you set it for disabled of course you're try 1T mode and I doubt you can run that with that processor, if Auto it may still try running it but just to be safe set it for 2T yourself.
The RAM Dividers are different for you since you're using an AM2 cpu so they have ratios that you can find on a chart on the net (do a quick search or use a calculator here
http://www.odfg.de/MSC/Memory Speed Calculator.html for quick guesses). If you were using a Phenom (any model) then the dividers would be 1:1, 1:1.33, 1:1.66, 1:2.0, 1:2.66 (starting from 400 up to 1066).
I hope this helps let me know if you need any other help I'm sure you'll like the board though it's probably my favorite board so far I've owned. The bios is not bad as far as options go, but the naming scheme is kinda strange for somethings for sure which is probably why you're stumped.
Feel free to PM me,
K