Formula board stuck in boot loop when enable XMP

[Zicon]

Hi, i've got the Maximus VI Formula board with a 4770k cpu and i'm having problems getting my RAM to work at the advertised speed. I've updated the BIOS to 1302 and i'm still having problems 😞

I've installed 4x8GB Corsair DDR3 sticks - CMY16GX3M2A2400C11A (PC3-19200 (2400), Non-ECC Unbuffered, CAS 11-13-13-31, XMP, 1.65V).

They are detected as 1333MHz as default. I enabled the XMP to get them running at 2400MHz but it then got stuck in a boot loop.

I've read on here to try manually setting the DRAM speed to 2400, setting the voltage to 1.65v and setting the primary timings to 11-13-13-31 but i've tried this and it still gets stuck in a boot loop.

Can anyone help me, or point me in the right direction of some things to try?

[Retired]

clr cmos and make a new profile, with the XMP

settings can get stuck in bios (mem section), especially if you have been using any of the Maximus mem tweaks options.. always have that one set to> Auto

The dram clk period should be on auto

I am at M5F tho

[Zicon]

I've been using the clr cmos button on back IO panel to clear bios. Held that down for 3secs and then set the memory to XMP. I haven't touched any of the other settings in the bios so it's all on auto. I checked the DRAM CLK period and that's on auto too. I rebooted and then it gets stuck in the reboot loop.

I watched the error code light on the board when it was booting and it keeps getting to 36 (CPU Post memory initialisation) then 4F (DXE IPL is started) and then reboots. I'mnot sure if those numbers mean anything but i just thought i'd mention it.

[Nate152]

Hi Zicon, Welcome to the ROG community. Try setting up your RAM manually again. Go into your BIOS, Hit F5 to set defaults, go to Extreme Tweaker Tab and set the AI Overclock Tuner to manual. Set the RAM frequency to 2400, Dram voltage 1.65 then go to Dram timing control and enter the first 4 timings 11-13-13-31. Let all other RAM timings on auto. Set the system agent voltage to 1.25v. How does it go now?

[Zicon]

Nate152 wrote:
Hi Zicon, Welcome to the ROG community. Try setting up your RAM manually again. Go into your BIOS, Hit F5 to set defaults, go to Extreme Tweaker Tab and set the AI Overclock Tuner to manual. Set the RAM frequency to 2400, Dram voltage 1.65 then go to Dram timing control and enter the first 4 timings 11-13-13-31. Let all other RAM timings on auto. Set the system agent voltage to 1.25v. How does it go now?

I've tried those settings but i didn't change the system agent voltage, so i'll have a go with that. Where in the menu is it?

[Retired]

ok, then the only thing i can think of is> 2400mhz/32GB that combination..

Hopefully someone else can help you, that run 32GB.. I only use 4 GB kits..

[Chino]

Mixing and using two identical kits doesn't give you a 100% guarantee that they will place nice together. Do the following and report back your results.

1. Load the optimized defaults in the BIOS.
2. Clear your CMOS.
3. Remove one of your CMY16GX3M2A2400C11A kits.
4. Load the optimized defaults in the BIOS again.
5. Enable XMP.

Let me know how it goes.

[Zicon]

Hi, i've tried that and now it's confused me even more. With 1 stick in slot 1 and 1 in slot 3, they work on XMP at 2400. I then did optimised defaults and reset cmos and installed the other 2 sticks to try all 4 again and then it was stuck in reboot loop.

I then reset cmos and tried optimised defaults and XMP and still stuck in reboot loop.

I've tried XMP with all 4 in and then changed the speed to 2200 and it seems to work okay on that. I also tried it on XMP and changing speed to 2600 but it didn't like that either and got stuck in boot loop.

[Zicon]

Also when i look in the bios it says target memory speed 2200, but in the ASUS AI Suite it reports 1100 and in CPU-Z it reports 1100 as well. Does that mean it's only running at 1100MHz at the minute, or does it just report 1100 because it's dual channel so really it's 2200?

[HiVizMan]

It is reading correctly. DDR is double data rate. so 1100 x 2 = 2200