Thunder K7X (S2468) FAQ Updated 07/08/03

  1. Is there TYAN System Monitor support for this system board?

    Yes!  Please go to the following page for more details and software download.
  2. Is there any power supply, chassis, or cooling recommendations?

    Yes!  Please check here for details and listings.
  3. What is the pinout for the serial port (COM2)?

    Please see page
  4. Why does my system hang during POST with my Intel Pro/1000 MT Gigabit Ethernet card installed?

    This issue was fixed in an Intel® Boot Agent Firmware update. You need to run Intel® Boot Agent v1.1.07 or newer. It can be downloaded from the following link:
  5. Why doesn't the BIOS (Option ROM) for PCI device show during boot up?

    The cause of the problem is that in order to be PC Compatible, the Option Rom space is limited to 128K.  This is true for any motherboard with PC compatible BIOS.

    In the common configurations, a newer AGP card (such as a Geforce 4) will require 64K of option ROM space, so you have only 64K of option ROM space left to work with. Many SCSI, NIC with PXE, IDE RAID etc. can easily use another 40-64K of option ROM space.

    By design the option ROM should shrink down to a smaller run time code after the initialization code has run. For example, some Adaptec cards will require 32K to initialize. Then they shrink down to 12K at run time; whereas some Geforce 4 cards require 64K to initialize and never release it.  Please check with the device manufacturer for the latest firmware upgrade or ask if they have a smaller option ROM available. Again, this is a limitation of the PC compatible specifications and not a failure of the motherboard BIOS.
  6. Why won't my CD-ROM or HDD boot be detected by the BIOS or show in the Boot Menu?

    Check the jumper on your CD-ROM. If it is the only device on the channel it must be set to master.
  7. Why does my system display less than 4GB in the OS even though I have installed 4 GB?

    AMD chipset architecture requires memory above 3.5GB to be reserved for PCI devices. You will typically see 3.6-3.8GB available.
  8. Why does my system give an NMI/Parity Error blue screen when I apply the Nvidia Detonator 23.11 drivers?

    This particular error occurs in combination with:

    1)  Nvidia's latest Detonator XP v.23.11 drivers
    2)  Geforce 3 family of video cards
    3)  AMD's AGP drivers

    If all 3 of these listed items are used in conjunction with any AMD 760 chipset motherboard you will receive this error.  Most video card manufacturers modify the drivers for their cards.  Therefore, if you use the video card manufacturer's drivers or Nvidia Detonator v.22.xx drivers (or earlier versions) you will not encounter this error message.  More information & a workaround can be found on the newsgroups
  9. Why can't I browse Network Neighborhood with my 3Com 3C996 Gigabit Ethernet Adapter?

    This is a driver issue with the 3c996 Gigabit Ethernet card and the AMD chipset.  3Com has released drivers to resolve this issue. The drivers are dated 12-18-01 & can be downloaded from or search for this driver at
  10. What is the IRQ routing for my motherboards PCI BUS?

    PCI Bus 1 is made up of 2 64bit, 66MHz 3.3v PCI slots.
    PCI Bus 2 is made up of 3 32bit, 33MHz 3.3v/5v PCI slots.

    The Interrupt routing is:
    PCI bus 1 slot 1 = INT A B C D
    PCI bus 1 slot 2* = INT B C A B
    PCI bus 2 slot 1 = INT A B C D
    PCI bus 2 slot 2 = INT B C D A
    PCI bus 2 slot 3 = INT C D A B
    3COM LAN #1   = PCI Bus 2 INTC
    3COM LAN #1   = PCI Bus 2 INTD
    ATI Rage XL      = PCI Bus 2 INTB
    Adaptec AIC7899W = PCI Bus 1 INTA/INTB

    *On the S2468UGN PCI bus 1 Slot 2 has SCSI Interrupt Steering Logic support. Therefore Interrupt C & D are routed to SCSI Interrupt A & B.
  11. Does the S2468 support onboard USB?

    Yes the S2468 uses the updated AMD 768 Peripheral Bus Controller that includes USB support. For more information see the link here.
  12. Why does the system only show 3.5 GB of memory when I have 4.0 GB of memory installed?

    Under the current PC memory addressing, there is a memory area just below 4.0 GB which is reserved permanently.  The reserved area is for system BIOS to put APIC, ACPI Table, PCI Devices', Resources and AGP aperture information.  When your system DRAM is 3.5 GB or lower, the system will show that the same amount of memory has been implemented.  However, if the system DRAM is above 3.5 GB of memory, the actual amount of memory that the system shows will be less due to the reserved area.  Regardless of memory size, the reserved memory addressing is always present, but only when the DRAM rises above the 3.5 GB amount will that area become visible.
  13. Why does my memory test program lock up when I use 4.0 GB of memory but runs fine with anything less?

    The memory test utility accesses the reserved memory address area.  When the program accesses this area, it causes the system to be unstable and locks up.

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