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Thread: ASRock Z77 Extreme4 Debug Code 4F

  1. #1
    thesiv is offline Junior Member
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    Default ASRock Z77 Extreme4 Debug Code 4F

    Hello everyone,

    I have recently built a new system which was working perfectly fine up until today. The system was fully up and running for about a week prior to this with Windows 7 installed as well as several other games and programs.

    Today when I went to turn the system on I was greeted by 6 beeps and the Dr.Debug code of 4F. It had done this to me once prior right after I built it and installed Windows, a simple restart solved it at that time.

    After troubleshooting and scouring the internet all day I am looking for some help. The system did boot to Windows twice today and I can occasionally access the BIOS when it does boot properly.

    Here are my system specs:






    • 2.90




    • Intel Core i5-3570K Ivy Bridge 3.4GHz




    • G.SKILL Ripjaws X Series 8GB DDR3 1600MHz




    • MSI GeForce GTX 760 Twin Frozr 2GB GDDR5




    • Kingston HyperX 3K 120GB 2.5




    • Seagate Desktop HDD 1TB 3.5




    • Asus DRW-24B1ST Internal 24X DVD Burner - 5.25




    • Cooler Master HAF XB EVO Test Bench & LAN Box Mid




    • Cooler Master Hyper 212 Evo Direct Touch 4 Heatpip




    • Cooler Master CM Storm QuickFire Rapid Wired Mecha




    • Cooler Master CM Inferno Wired Gaming Mouse




    • Corsair RM Series RM750 Modular Power Supply




    • Microsoft Windows 7 Home Premium Edition 64Bit



    Any help would be great!


  2. #2
    - wardog -'s Avatar
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    Default Re: ASRock Z77 Extreme4 Debug Code 4F

    Do you have another video card to use there? If so, try using it and see.

    If not, while only going into the BIOS to test that it at least boots to the BIOS, disable all onboard devices that you can and test afterwards.

  3. #3
    parsec's Avatar
    parsec is online now Senior Member
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    Default Re: ASRock Z77 Extreme4 Debug Code 4F

    The 4F POST code is a strange one, and as wardog suggested it could be related to any extra cards you use with the board.

    You could try the Intel on-CPU graphics for a while and see if you still get the error.

    One thing about six beeps I saw was a keyboard related problem. If you have another, simpler keyboard give that a try for a while.

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    thesiv is offline Junior Member
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    Default Re: ASRock Z77 Extreme4 Debug Code 4F

    Thanks for the input guys, I will try the following this morning and see where it gets me. I will post any results.

  5. #5
    thesiv is offline Junior Member
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    Default Re: ASRock Z77 Extreme4 Debug Code 4F

    Well here whats I have tried so far and how far I have gotten today.

    I have removed all of the hardware (except the CPU and memory) and removed the mobo from the case and tested it as such. Still got the 4F code.

    After this I removed the CPU to check for any bent pins and found none.

    The only progress that I have made is that I can enter the BIOS consistently if I start the system by pressing the clear CMOS button on the mobo.

    I have disabled all on board functions, execpt the on board USB.

    Regardless of all that I have tried if I do not boot the system to the BIOS then I get stuck at the 4F code. So progress has been minimal.

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    thesiv is offline Junior Member
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    Default Re: ASRock Z77 Extreme4 Debug Code 4F

    Not sure if anyone is still following this thread but here is another update if anyone is having a similar problem.

    I think I may have narrowed it down to a memory compatibility issue.

    The memory that I am currently running with is only listed as being compatible on the memory manufacturers website (GSKill), and not on the ASRock website under compatible memory for this board.

    I am running the most current version of the bios so I am assuming that if this memory is supported it would be now covered under the most up to date BIOS.

    I am considering going out and trying some other memory sticks in it to see if this is the problem or if the BIOS is corrupted or messed up.

  7. #7
    - wardog -'s Avatar
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    Default Re: ASRock Z77 Extreme4 Debug Code 4F

    If memory is where you're headed with this, try setting both of the XMP Profiles on the memory _and also_ try setting the 4 main timings manually with all other on Auto.

    Remember to clear the BIOS between each and every change.
    #1 - Please, when seeking help, enter the make and model of ALL parts that your system is comprised of in your Signature, or at least the model #'s in your System Specs, then "Save' it.
    ____If you are overclocking, underclocking, or undervolting any parts, informing us of this and their values would prove beneficial in helping you.

    #2 - G.Skill RAM Configurator for your boardSamsung Memory for your boardLatest AMD Chipset Drivers/WindowsLatest AMD Graphics Drivers/WindowsLatest Intel Drivers

    #3 - Please use the PSU Calculator found HERE to determine if it might be the PSU causing issues. I do(Lifetime PRO ver.) and will mention so if it is marginal for your build.
    ____Consider your PSU to be the foundation from which all else is built upon. Anything built upon a weak foundation is poorly built.

    ASRock Z77 Extreme6, i7-3770K, 16GB F3-14900CL9D-8GBSR, Seasonic SS-660XP2 Platinum, On-die HD 4000, Corsair H80i, Antec Spot Cool, Fractal Design R4 Black Pearl w/Window
    Server 1: ASRock 990FX Extreme9, FX-8150, 32GB AE316G1601U2K, Seasonic X-750 Gold, IBM ServeRAID M1015 (IT Mode), PowerColor AX5450 1GBK3-SH, Corsair H80i, Antec Spot Cool, Fractal Design XL R2
    Server 2: ASRock FM2A88X Extreme6+, A10-6800K, 16GB F3-17000CL11D-8GBXL, Seasonic X750 Gold, IBM ServeRAID M1015 (IT Mode), On-die HD 8670D, Corsair H80i, Antec Spot Cool, Fractal Design Arc Midi R2

  8. #8
    parsec's Avatar
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    Default Re: ASRock Z77 Extreme4 Debug Code 4F

    IMO, I suggest using memory found in the compatibility list. I usually do that, particularly if the PC builder does not have a selection of different memory models to try with the board. If that is your situation, use the compatibility list, it limits your selections but they can be trusted.

    G.SKILL normally has a great RMA policy, they likely will exchange your current memory for a model found in the compatibility list. G.SKILL XH, XL, SR2, and other models are in the support list.

    Memory compatibility is a pet peeve of mine, why one model is compatible and another not has some basis in the design of the DIMMs and the chips they use, but most memory manufactures do not reveal that information.

    Next, for Intel processor boards with the on-CPU memory controller (IMC), there are specs about compatible DIMMs (as said above), but that is buried in the particular processor's data sheet.

    Beyond that, if there are other aspects of memory compatibility involved, they are not readily available to the public.

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