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Thread: ASRock Extreme4 x99 boot failure with more than 2 G.SKILL F4-3000C15D-16GRBB




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    Default ASRock Extreme4 x99 boot failure with more than 2 G.SKILL F4-3000C15D-16GRBB

    Earlier this month, I put together a new build with an ASRock Extreme4 x99 motherboard and 2x G.SKILL F4-3000C15D-16GRBB (2x 8GB DDR4 3000 for those who don't want to click). All went well, and after getting paid again, I picked up 6 more of the same RAM chips to add to the board, since its max capacity (128GB) is so high and I saw a good sale.

    Unfortunately, after installing the rest of the DIMMs, I tried to boot the rig and got no video signal, and no POST beeps. I removed them each, 2 at a time, until I was down to the original 2, and it booted as expected. Thinking there might be a bad chip in the lot, I then tested them all 2 at a time, getting a normal boot every time.

    Thinking the BIOS version might be to blame, I went ahead and flashed it to the latest release (2.00) and tried again. Same trials, same results.

    I'm pretty much at a loss for what to try next, but I'd really like to get this thing running with the all of the RAM installed. It was one of the primary reasons I bought this board. Any suggestions?

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    Default Re: ASRock Extreme4 x99 boot failure with more than 2 G.SKILL F4-3000C15D-16GRBB

    Update: After finding some more time to work on the rig, I decided to try going against the instructions in the manual, since nothing else has worked.

    Lo and behold, the problem is that the system won't POST when there's a DIMM in DDR4_C1 or C2, and the manual indicates that DIMMs should be installed in pairs, A1 + B1, C1 + D1, A2 + B2, C2 + D2, so what I had been doing was trying to add each pair in C1 + D1.

    So, currently I have 6xDIMM installed, in A1, A2, B1, B2, D1, D2, booting normally. Mounting any of the 8 DIMMs to C1 or C2 causes it to silently fail to POST, no beep code, no monitor signal. This leads me to believe that there's a hardware defect in the motherboard, but that is just a guess.

  3. #3
    Joe-912's Avatar
    Joe-912 is offline Member
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    Default Re: ASRock Extreme4 x99 boot failure with more than 2 G.SKILL F4-3000C15D-16GRBB

    Well you made some progress then, one of the problems is I think that you have not brought a complete kit that has been tested to work together but that would cost big bucks I expect, have you set the xmp profile in the bios, which will adjust the voltage correctly, give that a try if you haven't done already and try adding the other sticks, you could even try upping the voltage a tad
    good luck!, nice memory that
    Asus Maximus 7 Hero > Corsair Obsidian 750d Airflow > Intel 4790K > Noctua NH-D15 > 16GB G-skill Sniper 2133 > Samsung SM951 256GB > Sandisk X400 512GB > Western digital black Sata 6 500GB > Western digital black 640GB > Windows 10 Pro 64 > Asus 27" MX279H Monitor > Gibabyte GTX 980Ti extreme

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