HP server fails to boot, getting a Red Screen with Illegal Opcode

Solution Verified - Updated -


  • Error occurs before loading grub
  • System will not boot
  • The boot process stops before the grub screen
  • The error that appears on a red screen displaying an illegal opcode message as shown in the following:
    Illegal Opcode

  • Disabled ASR in BIOS of HP DL 370 and now the machine fails to boot with the following error.

    > Illegal Op code  
    > EAX=00000000&EBX=00007C00 ECX=00000001 EDX=00000180  
    > EBP=0000938C ESI=000007BEEDI=00000800  
    > DS=0000ES=0000 FS=0000GS=0000  
    > CS:EIP=0000:00007E00 SS:ESP=1000:0000B000  
    > ELFLAGS=00000202


  • HP Hardware
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 5

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