ok, looks like the Intel Storage driver causes this bugcheck (BSOD):
*******************************************************************************
* *
* Bugcheck Analysis *
* *
*******************************************************************************
PFN_LIST_CORRUPT (4e)
Typically caused by drivers passing bad memory descriptor lists (ie: calling
MmUnlockPages twice with the same list, etc). If a kernel debugger is
available get the stack trace.
Arguments:
Arg1: 0000000000000007, A driver has unlocked a page more times than it locked it
Arg2: 000000000043bce3, page frame number
Arg3: 0000000000000001, current share count
Arg4: 0000000000000000, 0
Debugging Details:
------------------
BUGCHECK_STR: 0x4E_7
CUSTOMER_CRASH_COUNT: 1
DEFAULT_BUCKET_ID: WIN7_DRIVER_FAULT
PROCESS_NAME: System
CURRENT_IRQL: 2
TAG_NOT_DEFINED_c000000f: FFFFF80000BA0FB0
LAST_CONTROL_TRANSFER: from fffff80002441a83 to fffff80002479c00
STACK_TEXT:
nt!KeBugCheckEx
nt! ?? ::FNODOBFM::`string'
nt! ?? ::FNODOBFM::`string'
nt!IopfCompleteRequest
iaStor
0x0
0x0
0x0
STACK_COMMAND: kb
FOLLOWUP_IP:
iaStor+293e0
fffff880`0105f3e0 ?? ???
IMAGE_NAME: iaStor.sys
FAILURE_BUCKET_ID: X64_0x4E_7_iaStor+293e0
BUCKET_ID: X64_0x4E_7_iaStor+293e0
Loaded symbol image file: iaStor.sys
Image path: \SystemRoot\system32\drivers\iaStor.sys
Image name: iaStor.sys
Timestamp: Thu Jan 13 02:50:12 2011
So use the latest driver from Intel and not the older driver which Dell offers for your XPS 17 (L702X).