BSOD IMAGE_NAME: ntkrpamp.exe

Hi
Hope this is right way to post the dump, but im not sure why this Dell laptop is BSODing
Any ideas?

Dell windows 7 pro
No idea when it happens but it might be once every week or two.
Output from WinDBG

Code:

 
IRQL_NOT_LESS_OR_EQUAL (a)
An attempt was made to access a pageable (or completely invalid) address at an
interrupt request level (IRQL) that is too high. This is usually
caused by drivers using improper addresses.
If a kernel debugger is available get the stack backtrace.
Arguments:
Arg1: 00000000, memory referenced
Arg2: 00000002, IRQL
Arg3: 00000000, value 0 = read operation, 1 = write operation
Arg4: 830b9ebc, address which referenced memory
 
Debugging Details:
------------------
 
 
READ_ADDRESS: GetUlongFromAddress: unable to read from 831aa84c
Unable to read MiSystemVaType memory at 83189e20
00000000 
 
CURRENT_IRQL: 2
 
FAULTING_IP: 
nt!KiSignalSynchronizationObject+15
830b9ebc 8b07 mov eax,[edi]
 
CUSTOMER_CRASH_COUNT: 1
 
DEFAULT_BUCKET_ID: VISTA_BETA2
 
BUGCHECK_STR: 0xA
 
LAST_CONTROL_TRANSFER: from 830b9ebc to 83081b7f
 
STACK_TEXT: 
8078ad84 830b9ebc badb0d00 8316e3b4 8316bd20 nt!KiTrap0E+0x1b3
8078ae08 830ba702 8316bd20 8316e3b4 8078aed4 nt!KiSignalSynchronizationObject+0x15
8078ae50 830ba407 8316bd20 00000000 8316d680 nt!KiTimerWaitTest+0x1cf
8078af38 830ba33a 8316bd20 8078af78 00000000 nt!KiProcessExpiredTimerList+0x8b
8078afac 830b84ce 00120787 bf7ad568 00000000 nt!KiTimerExpiration+0x25c
8078aff4 830b7c9c bf7ad518 00000000 00000000 nt!KiRetireDpcList+0xcb
8078aff8 bf7ad518 00000000 00000000 00000000 nt!KiDispatchInterrupt+0x2c
WARNING: Frame IP not in any known module. Following frames may be wrong.
830b7c9c 51bb80fb 0000001a 00d6850f bb830000 0xbf7ad518
830b7ca0 00000000 00d6850f bb830000 00000128 0x51bb80fb
 
 
STACK_COMMAND: .bugcheck ; kb
 
FOLLOWUP_IP: 
nt!KiSignalSynchronizationObject+15
830b9ebc 8b07 mov eax,[edi]
 
FAULTING_SOURCE_CODE: 
 
 
SYMBOL_STACK_INDEX: 1
 
FOLLOWUP_NAME: MachineOwner
 
SYMBOL_NAME: nt!KiSignalSynchronizationObject+15
 
MODULE_NAME: nt
 
IMAGE_NAME: ntkrpamp.exe
 
DEBUG_FLR_IMAGE_TIMESTAMP: 521e9cb6
 
FAILURE_BUCKET_ID: 0xA_nt!KiSignalSynchronizationObject+15
 
BUCKET_ID: 0xA_nt!KiSignalSynchronizationObject+15
 
Followup: MachineOwner
---------

Hello mreco,

Please read the instructions here: Blue Screen of Death (BSOD) Posting Instructions, and post back with the needed information. One of our BSOD experts should be by later when able to further help. :)