Asus Z270i CPU + DRAM LED

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bigme

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May 10, 2012
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So I recently received my compenents for a new build (all parts new) - and as usual I like to test things out before attaching everything inside my case.
Parts tested so far - intel 7700k (w/ noctua L9i cooler), corsair 3200mhz 2x8gb LP ram, samsung 960evo nvme 512gb ssd, corsair 450w sfx psu.
So I get cracking with putting those parts together, hook up an hdmi to my mobo and first boot - CPU led flashes red for a few seconds, then my DRAM led stays yellow, and the two alternate every 5-10s.
So I thought my RAM sticks were faulty and so I swapped places - same happened. I then tested 1 stick at a time. Both sticks didn't post on the inner RAM lane, but both sticks worked on their own on the outside lane. I checked the parts for compatibility - all were listed on the asus website. So i contacted my dealer, sent my board back to them and they claimed that it was a bent CPU pin with a picture attached (I find that hard to believe as I am usually very careful about the CPU and its socket). So they asked if i wanted the board back, or they could send it off to Asus themselves to get it checked out for a small fee. I was like alright, why not as I believed something else was wrong.
Fast forward a few weeks, board comes back and the same thing happens without a bent cpu pin. I flashed to the newest bios (using just 1 stick of ram on the outside lane), and tried in vain to get my other RAM lane to work. XMP was never switched on, have not changed anything on the bios since opening the box from new (and flashing the newest version from the release version).
Chances of a faulty RAM lane? Should I send my board back to the dealer again? I'm really tired of waiting now - its been 2 months since i purchased the board and I still haven't been able to use it.
Thanks,
eggyegg
 
Solution
Achint2000
If they returned the board after claiming to fix it and ever since this memory lane issue has been there, it's fine. Otherwise, be careful because, if, the RAM Lane is physically damaged, they might reject it saying it was physically mishandled which isn't covered in warranty. The only solution here is to RMA it.
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Achint2000

Achint2000

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Put both RAMs in Channel B Slot 1 and 2, reset the motherboard BIOS using the CLRTC Jumper Pin on your motherboard or by removing the CMOS battery.

I myself just had my new build with ASUS Z270F and DRAM and CPU LEDs alternate switch when something isn't right. (My case, clock speeds)

Make sure the RAMs are properly seated and locked. Resetting the BIOS will reset all clock speeds to default.
 
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bigme

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May 10, 2012
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Gave that a try and unfortunately the DRAM lights were still yellow - but the CPU lights don't seem to be switching on anymore. Btw, I only have A1 + B1 ram slots after consulting the mobo manual - maybe that somewhat explains it, especially if they are completely separate lanes.



Here some some pics of my CPU socket pins (sorry if the links look dodgy - I'm linking directly to my google photos and the link is stupidly long)
https://goo.gl/nnvwgy
https://goo.gl/WWNjnH
https://goo.gl/2QcKI6

Eggyegg.
 
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Achint2000

Achint2000

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The pins look perfectly fine. What exactly did you mean when you said "the outside lane".. ?

I don't always listen to the manual when it comes to RAM Slots... Even in my previous build, two slots in channel B worked flawlessly.
 
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Achint2000

Achint2000

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A simple guess says that if the memory controller pin was damaged, the RAMs won't work at all. bigme stated that both sticks worked on their own on the outside lane.

Try one RAM in CHA_1 and other in CHB_2 (both in outside slots of both channels), it might work...
 
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bigme

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There are only two RAM lanes on my motherboard. One closer to the CPU socket (the inside lane), and one away from the CPU socket/close to the edge of the board (outside lane).

Here's another picture of the board. https://goo.gl/pS5MKu
 
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Achint2000

Achint2000

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That's a mini motherboard with just one RAM Channel... Maybe the inner RAM lane is damaged?
Still try resetting the BIOS, might help. (omg where's the CMOS Battery? Where's the CLRTC Jumper Pin? It must be in the manual)

Do both RAMs work individually in the inner lane? If yes, then it's an issue with the BIOS and timings or something between both RAM Sticks. If No, most probably there's something wrong with the inner lane.
 
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bigme

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What would that look like on the bottom side of the CPU? I'm currently staring at it and I can't find any signs of scratches or damage.



CMOS battery (the little flat round battery?) is stuck against the wifi chip - I did unplug that along with everything else, pressed the power button a few times and then reconnected it. CLRTC jumper pin sits just north of the PCIe lane.

Both ram sticks do not work in the inner lane. they do however, work fine in the outer lane. I always wondered if there was something wrong with the inner lane.
 
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alexoiu

alexoiu

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"What would that look like on the bottom side of the CPU? I'm currently staring at it and I can't find any signs of scratches or damage."
Black spots, or no sign at all. Try also a different RAM kit, to rule out a memory issue.

"Try also a different RAM kit, to rule out a memory issue."
Disregard it, since both stick not working in that slot. Board, or CPU. If they did change the board, I'd RMA the CPU.
 
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bigme

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They didn't change the board, they 'fixed' it. Yeah I was wondering if both ram sticks worked in the 'outside' lane, then they should work on their own on the inside lane as well.
eggyegg
 
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Achint2000

Achint2000

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If they returned the board after claiming to fix it and ever since this memory lane issue has been there, it's fine. Otherwise, be careful because, if, the RAM Lane is physically damaged, they might reject it saying it was physically mishandled which isn't covered in warranty. The only solution here is to RMA it.
 
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