©ASUSTEK COMPUTER INC. ALL RIGHTS RESERVED.

Maori80 · ‎04-08-2016

After Flash to the newest Bio , My System seem having trouble with the RAM running in Dual Channel Mode. I went to dinner last night, My Computer was on and running fine, got back home, I have no display on my monitor. so I tried to restart the System, and it give me Qcode 55, I thought was weird, so i tried to restart again, this time give me Qcode 00. I shutdown from the power supply, and restart the system again, it give me back to Qcode 55 again. then I tried to test the RAM slot by slot, the Memory will work at only the A1 and A2 slot , however when anything pluged in B1 and B2, it give me Qcode 55, reboot give Qcode 00 ( same if you press memok button) . I took everything apart, finally able to get it post and boot into windows I thought woohoo fixed. but within 30 secs, Windows 10 give dump error.. and restart the system into Qcode 00.. try to reset and it return to Qcode 55.. anyone have any similar issues with the board?

System Spec
i7 6700k @ 4.7ghz ( same thing happens at stock )
Corsair H110i GT
Asus Maximus VIII Hero Bio Version 1601
Corsair CORSAIR Vengeance LPX 64GB (4 x 16GB) 288-Pin DDR4 SDRAM DDR4 2666 (PC4 21300) Desktop Memory
Asus Strix R9 390 8GB
Samsung 850 Evo 500GB
Western Digital Black 4TB Performance
Samsung BD Drive
Corsair RM750 Powersupply
NZXT Phantom 530 Black

hiong · ‎04-08-2016

have you tried setting System Agent and VCCIO voltages to higher non-auto values?

thomas_yiu · ‎04-08-2016

also, make sure you setting the timing to 16-18-18-35 @ 1.2V with 2666Mhz

Sincerely,
TY

Maori80 · ‎04-08-2016

I have set it in single channel mode, then put the ram into dual channel mode, the moment it goes to dual channel mode it will start Qcode 55 and no post.

NemesisChild · ‎04-08-2016

Are you running with the XMP profile enabled or manual bios memory settings?

Try using auto/default memory settings to see if B1 and B2 work properly.

Intel i9 10850K@ 5.3GHz
ASUS ROG Strix Z490-E
Corsair H115i Pro XT
G.Skill TridentZ@ 3600MHz CL14 2x16GB
EVGA RTX 3090 Ti FWT3 Ultra
OS: WD Black SN850 1TB NVMe M.2
Storage: WD Blue SN550 2TB NVMe M.2
EVGA SuperNova 1200 P2
ASUS ROG Strix Helios GX601

Maori80 · ‎04-08-2016

Still no Post, 1st Give Qcode 41 no Post, reset the System it goes back to Qcode 00 , Shutdown from Powersupply , restart , Qcode 55 again~..

Nate152 · ‎04-08-2016

Hi Maori80

You could try flashing the 1601 bios or revert to your previous bios version. As hiong says you will likely need to raise the vccio and cpu system agent voltages for 64GB of ram.

ROG Strix 1070 OC Guide - ROG Spatha X Rapid Fire - ROG Falchion Touch Panel - z270 BCLK Overclocking - Xsplit Gamecaster Guide - ROG RX 460 OC Guide

xeizo · ‎04-08-2016

I can't tell exactly what voltage setting you need to change, but play around with them, my 2666mHz RAM works perfectly fine @ 1.2V in it's specified 2666MHz-mode. But to get to 3000MHz I had to raise VDRAM all the way to 1.36V in which case it's totally stable. Even 1.35V is a no-go. I'm not telling you it's the same voltage setting in your case, but playing around may prove beneficial. I guess 64GB RAM is rather unusual, so the boards default settings may not be adequately tuned for 64GB, but there's plenty of settings for you to dial in the right one 😄

R9 7950X - ASUS X670E Crosshair Extreme (bios 0803) - 32GB HyperX Fury Beast @6200c32 - Corsair H150i Pro - ASUS RTX3080 TUF OC V2 - Phanteks P400A - Corsair RM850 - WD SN850

Chino · ‎04-09-2016

clear your CMOS and test each memory module individually to see if your system would post. Report back your results.

Maori80 · ‎04-09-2016

I think the B1 and B2 slot are bad for my board, all the ram works by it self on A1 and A2. the moment I plug into B1 and B2 it give me Qcode 55..

Maximus VIII Hero Memory QCode 55