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  1. #1
    New ROGer Array PedroM85 PC Specs
    PedroM85 PC Specs
    MotherboardAsus ROG Crosshair VIII Hero
    ProcessorAMD Ryzen 5 3600
    Memory (part number)2x 16Gb Corsair Vengeance Pro RGB 3200Mhz CL16
    Graphics Card #1Powercolor Radeon RX Vega 64 Red Devil
    Monitor2x AOC C32G1 31.5" 1080P 144Hz
    Storage #1Gigabyte 1Tb M.2 NVMe
    CPU CoolerNoctua NH-D15 Chromax
    CaseCorsair Obsidian 500D
    Power SupplyCorsair RM1000x
    Keyboard Corsair K70 Lux
    Mouse Corsair Ironclaw RGB Wireless
    Headset Corsair Void Pro 7.1 Wireless
    Mouse Pad Asus ROG Sheath XXL

    Join Date
    Nov 2020
    Reputation
    10
    Posts
    4

    Asus ROG Crosshair VIII Hero constant reboots

    Hello everyone!

    My first post here, unfortunately is for a help request/complain.

    On November 5th, I bough a Crosshair VIII Hero. Reason? I was running a Mini-ITX system and my RTX 2080 was dropping some clocks due to temperatures (NZXT H210 is not very airflow focused.)

    I then switched all my hardware for my ATX case (Corsair Obsidian 500D). The hardware was the following on the ITX case:

    NZXT H210
    AMD Ryzen 5 3600
    Gigabyte X570i Pro
    2 x 16Gb Corsair Vengence RGB Pro 3200Mhz CL16
    Corsair H115i
    Corsair RM1000x
    Gigabyte 1Tb M.2 NVMe drive
    MSI RTX 2080 Duke

    Never had a single issue with the system, however, as I stated above, i had some frequency drops on the RTX due to temperature.

    Now, the system is the following:

    Corsair Obsidian 500D
    AMD Ryzen 5 3600
    Asus ROG Crosshair VIII Hero
    2 x 16Gb Corsair Vengence RGB Pro 3200Mhz CL16
    Noctua NH-D15 Chromax
    Corsair RM1000x
    Gigabyte 1Tb M.2 NVMe drive
    MSI RTX 2080 Duke

    Since then, I have constante reboots on the system. I tried to check within Reddit, whoever, no help could be found (a lot of people refered that this is not a BIOS problem, even tho, by changing some stuff it helped reducing the frequency.

    The TS that I have done until know:

    BIOS updates:
    Received the MB with 2311, update to 2402.
    Then, 2502 and 2702. All of them have the same issue.

    Click image for larger version. 

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Views:	5 
Size:	116.2 KB 
ID:	87093
    Click image for larger version. 

Name:	Error.JPG 
Views:	85 
Size:	45.2 KB 
ID:	87100

    Memory: With or withou DOCP, 1 DIMM, 2 DIMM, change the slots, 1.36V test, nothing changed.
    GPU: Switched the RTX for a VEGA64 no changes.
    PSU: Verified all the cables, changed the connection on the PSU
    Case: disassemble all the rig, rechecked all the connections, same thing.
    Temperature and airflow: Case temp is around 50ºC, 3 fans intake, 3 fans exhaust. No temperature spikes or anything related.

    The only point that helped on reducing the frequency of the errors was the disabling of the "DF CStates" which passed from 5/6 per day to 1 per day.

    Tried to contact Asus support and all the interaction was:
    - please send us the serial number of the motherboard
    - contact the location where you have bought and ask for an RMA (I'm based in Portugal)

    No other TS or attempt to help.

    So, I'm asking to the BIOS gods in here, can you please help me? I really want to avoid an RMA when the whole behaviour really appears to be something related to the BIOS.

  2. #2
    ROG Enthusiast Array
    Join Date
    Mar 2012
    Reputation
    10
    Posts
    60

    unfortunatly you're not alone, I've been having terrible luck with these new bioses (5900x on a Crosshair VIII Hero), machine is very unstable , currently running my Samsung B-die DDR3600 kit at DDR2400 to get some stability, have to set VDIMM to ~1.4V, SOC to 1.15v, iod vddg to 1.05v, ccd vddg to 0.98v and enable LLC lvl3 to get any stability

    I've tried 2 diffrent memory kits (both work fine in another computer)

    Waiting for new bios/AGESA, if still unstable I will sell my C8H and try my luck with a diffrent brand, (been an asus user for many years)

  3. #3
    New ROGer Array PedroM85 PC Specs
    PedroM85 PC Specs
    MotherboardAsus ROG Crosshair VIII Hero
    ProcessorAMD Ryzen 5 3600
    Memory (part number)2x 16Gb Corsair Vengeance Pro RGB 3200Mhz CL16
    Graphics Card #1Powercolor Radeon RX Vega 64 Red Devil
    Monitor2x AOC C32G1 31.5" 1080P 144Hz
    Storage #1Gigabyte 1Tb M.2 NVMe
    CPU CoolerNoctua NH-D15 Chromax
    CaseCorsair Obsidian 500D
    Power SupplyCorsair RM1000x
    Keyboard Corsair K70 Lux
    Mouse Corsair Ironclaw RGB Wireless
    Headset Corsair Void Pro 7.1 Wireless
    Mouse Pad Asus ROG Sheath XXL

    Join Date
    Nov 2020
    Reputation
    10
    Posts
    4

    Quote Originally Posted by ffletchs View Post
    unfortunatly you're not alone, I've been having terrible luck with these new bioses (5900x on a Crosshair VIII Hero), machine is very unstable , currently running my Samsung B-die DDR3600 kit at DDR2400 to get some stability, have to set VDIMM to ~1.4V, SOC to 1.15v, iod vddg to 1.05v, ccd vddg to 0.98v and enable LLC lvl3 to get any stability

    I've tried 2 diffrent memory kits (both work fine in another computer)

    Waiting for new bios/AGESA, if still unstable I will sell my C8H and try my luck with a diffrent brand, (been an asus user for many years)
    I don't know if it it brings me some confort or just sadness that we spent almost 450Eur/$ on a motherboard that might or not work.

  4. #4
    New ROGer Array odeivogersm PC Specs
    odeivogersm PC Specs
    MotherboardROG Crosshair VIII Hero (WI-FI)
    Processor3900x
    Memory (part number)G.SKILL Ripjaws V Series 32GB (F4-3600C16D-32GVKC)
    Graphics Card #1STRIX-GTX980-DC2OC-4GD5
    Monitor2x NEC MultiSync LCD2690WUXi
    Storage #1Sabrent 1TB Rocket NVMe 4.0 Gen4 PCIe M.2
    Storage #2Samsung 840 Evo 1TB
    CPU CoolerNoctua NH-U12A
    CaseFractal Design Meshify-C
    Power SupplyFractal Design Ion+ 660W Platinum

    Join Date
    Nov 2020
    Reputation
    10
    Posts
    8

    Lightbulb

    Quote Originally Posted by PedroM85 View Post
    Hello everyone!

    My first post here, unfortunately is for a help request/complain.

    On November 5th, I bough a Crosshair VIII Hero. Reason? I was running a Mini-ITX system and my RTX 2080 was dropping some clocks due to temperatures (NZXT H210 is not very airflow focused.)

    I then switched all my hardware for my ATX case (Corsair Obsidian 500D). The hardware was the following on the ITX case:

    NZXT H210
    AMD Ryzen 5 3600
    Gigabyte X570i Pro
    2 x 16Gb Corsair Vengence RGB Pro 3200Mhz CL16
    Corsair H115i
    Corsair RM1000x
    Gigabyte 1Tb M.2 NVMe drive
    MSI RTX 2080 Duke

    Never had a single issue with the system, however, as I stated above, i had some frequency drops on the RTX due to temperature.

    Now, the system is the following:

    Corsair Obsidian 500D
    AMD Ryzen 5 3600
    Asus ROG Crosshair VIII Hero
    2 x 16Gb Corsair Vengence RGB Pro 3200Mhz CL16
    Noctua NH-D15 Chromax
    Corsair RM1000x
    Gigabyte 1Tb M.2 NVMe drive
    MSI RTX 2080 Duke

    Since then, I have constante reboots on the system. I tried to check within Reddit, whoever, no help could be found (a lot of people refered that this is not a BIOS problem, even tho, by changing some stuff it helped reducing the frequency.

    The TS that I have done until know:

    BIOS updates:
    Received the MB with 2311, update to 2402.
    Then, 2502 and 2702. All of them have the same issue.

    Click image for larger version. 

Name:	Erros.JPG 
Views:	5 
Size:	116.2 KB 
ID:	87093
    Click image for larger version. 

Name:	Error.JPG 
Views:	85 
Size:	45.2 KB 
ID:	87100

    Memory: With or withou DOCP, 1 DIMM, 2 DIMM, change the slots, 1.36V test, nothing changed.
    GPU: Switched the RTX for a VEGA64 no changes.
    PSU: Verified all the cables, changed the connection on the PSU
    Case: disassemble all the rig, rechecked all the connections, same thing.
    Temperature and airflow: Case temp is around 50ºC, 3 fans intake, 3 fans exhaust. No temperature spikes or anything related.

    The only point that helped on reducing the frequency of the errors was the disabling of the "DF CStates" which passed from 5/6 per day to 1 per day.

    Tried to contact Asus support and all the interaction was:
    - please send us the serial number of the motherboard
    - contact the location where you have bought and ask for an RMA (I'm based in Portugal)

    No other TS or attempt to help.

    So, I'm asking to the BIOS gods in here, can you please help me? I really want to avoid an RMA when the whole behaviour really appears to be something related to the BIOS.
    Try manually setting these voltages. I used to get constant reboots with the newer BIOSs too and this was the solution I concocted and it worked!

    VDDSOC = 1.05
    VDDG CCD = 0.950
    VDDG IOD = 0.950
    CLDO VDDP = 0.900

  5. #5
    New ROGer Array PedroM85 PC Specs
    PedroM85 PC Specs
    MotherboardAsus ROG Crosshair VIII Hero
    ProcessorAMD Ryzen 5 3600
    Memory (part number)2x 16Gb Corsair Vengeance Pro RGB 3200Mhz CL16
    Graphics Card #1Powercolor Radeon RX Vega 64 Red Devil
    Monitor2x AOC C32G1 31.5" 1080P 144Hz
    Storage #1Gigabyte 1Tb M.2 NVMe
    CPU CoolerNoctua NH-D15 Chromax
    CaseCorsair Obsidian 500D
    Power SupplyCorsair RM1000x
    Keyboard Corsair K70 Lux
    Mouse Corsair Ironclaw RGB Wireless
    Headset Corsair Void Pro 7.1 Wireless
    Mouse Pad Asus ROG Sheath XXL

    Join Date
    Nov 2020
    Reputation
    10
    Posts
    4

    Quote Originally Posted by odeivogersm View Post
    Try manually setting these voltages. I used to get constant reboots with the newer BIOSs too and this was the solution I concocted and it worked!

    VDDSOC = 1.05
    VDDG CCD = 0.950
    VDDG IOD = 0.950
    CLDO VDDP = 0.900
    Thanks for the tip.

    Until know, I found some points that were really able to bring some stability to the system.

    DF Cstates : Disabled
    PBO Enhanced Mode: Disabled

    These 2 options really dropped the number of errors and reboots. Maybe to 1 per day.
    Other thing that I did was to overclock the hell out of the 3600.

    Amazingly, a 4.2Ghz all core at 1.35V really brought the system to be totally stable.
    I'm gonna add your values because what it appears to be is the "Auto" settings on the BIOS that are crazy.

    Currently this is my setup:
    4.2Ghz all core at 1.35V
    3200Mhz 16-18-18-36 (DOCP Timmings)
    DF CStates: DIsabled
    PBO Enhanced Mode: Disabled

    Since yesterday 09:26 GMT that I don't have any WHEA nor CPU Core. It might have solved it!!!

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