BSOD - Stop instruction

Running Windows 7 home prem. on a HP Pavillion Quad 4.  The machine is less than a year old.  I am now getting BSOD several times a day - at random times.

Here is what I have from the DMP file.  Any clue on how to diagnose this?

Thanks,

Leor

The computer has rebooted from a bugcheck. The bugcheck was: 0x0000007f (0x0000000000000008, 0x0000000080050031, 0x00000000000406f8, 0xfffff80002c84eb0). A dump was saved in: C:\Windows\MEMORY.DMP. Report Id: 022211-65348-01.

Use !analyze -v to get detailed debugging information.

BugCheck 7F, {8, 80050031, 406f8, fffff80002c84eb0}

***** Kernel symbols are WRONG. Please fix symbols to do analysis.

Probably caused by : ntoskrnl.exe ( nt+70740 )

Followup: MachineOwner
---------

0: kd> !analyze -v
*******************************************************************************
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *
*******************************************************************************

UNEXPECTED_KERNEL_MODE_TRAP (7f)
This means a trap occurred in kernel mode, and it's a trap of a kind
that the kernel isn't allowed to have/catch (bound trap) or that
is always instant death (double fault).  The first number in the
bugcheck params is the number of the trap (8 = double fault, etc)
Consult an Intel x86 family manual to learn more about what these
traps are. Here is a *portion* of those codes:
If kv shows a taskGate
        use .tss on the part before the colon, then kv.
Else if kv shows a trapframe
        use .trap on that value
Else
        .trap on the appropriate frame will show where the trap was taken
        (on x86, this will be the ebp that goes with the procedure KiTrap)
Endif
kb will then show the corrected stack.
Arguments:
Arg1: 0000000000000008, EXCEPTION_DOUBLE_FAULT
Arg2: 0000000080050031
Arg3: 00000000000406f8
Arg4: fffff80002c84eb0

Debugging Details:
------------------

MODULE_NAME: nt

FAULTING_MODULE: fffff80002c4c000 nt

DEBUG_FLR_IMAGE_TIMESTAMP:  4cc791bd

BUGCHECK_STR:  0x7f_8

CUSTOMER_CRASH_COUNT:  1

DEFAULT_BUCKET_ID:  VISTA_DRIVER_FAULT

CURRENT_IRQL:  0

LAST_CONTROL_TRANSFER:  from fffff80002cbbca9 to fffff80002cbc740

STACK_TEXT: 
fffff800`00ba4d28 fffff800`02cbbca9 : 00000000`0000007f 00000000`00000008 00000000`80050031 00000000`000406f8 : nt+0x70740
fffff800`00ba4d30 00000000`0000007f : 00000000`00000008 00000000`80050031 00000000`000406f8 fffff800`02c84eb0 : nt+0x6fca9
fffff800`00ba4d38 00000000`00000008 : 00000000`80050031 00000000`000406f8 fffff800`02c84eb0 00000000`00000000 : 0x7f
fffff800`00ba4d40 00000000`80050031 : 00000000`000406f8 fffff800`02c84eb0 00000000`00000000 00000000`00000000 : 0x8
fffff800`00ba4d48 00000000`000406f8 : fffff800`02c84eb0 00000000`00000000 00000000`00000000 00000000`00000000 : 0x80050031
fffff800`00ba4d50 fffff800`02c84eb0 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0x406f8
fffff800`00ba4d58 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt+0x38eb0

STACK_COMMAND:  kb

FOLLOWUP_IP:
nt+70740
fffff800`02cbc740 48894c2408      mov     qword ptr [rsp+8],rcx

SYMBOL_STACK_INDEX:  0

SYMBOL_NAME:  nt+70740

FOLLOWUP_NAME:  MachineOwner

IMAGE_NAME:  ntoskrnl.exe

BUCKET_ID:  WRONG_SYMBOLS