BSOD with desktop already visible - lenovo x200

my BSOD with Win7proSp1 on lenovo x200Tablet occures from time to time at the end of boot time, when the desktop is already visible. The only change I made to the original settings was to disactivate Bluetooth drivers since I do not use them. The error was present however also before that.
Thanks for any help, and congratulations again for the great site

The only one I can get any info out of mentions Sandboxie.

Driver Reference Table - SbieDrv.sys

Try updating that.

Code:

Microsoft (R) Windows Debugger Version 6.12.0002.633 AMD64
Copyright (c) Microsoft Corporation. All rights reserved.
 
Loading Dump File [C:\Users\Derek\AppData\Local\Temp\Temp1_Seven Forums_Lenovo.zip\Seven Forums\081712-21403-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available
Symbol search path is: SRV*c:\symbols*http://msdl.microsoft.com/download/symbols
Executable search path is: 
Windows 7 Kernel Version 7601 (Service Pack 1) MP (2 procs) Free x86 compatible
Product: WinNt, suite: TerminalServer SingleUserTS
Built by: 7601.17790.x86fre.win7sp1_gdr.120305-1505
Machine Name:
Kernel base = 0x82c49000 PsLoadedModuleList = 0x82d924d0
Debug session time: Thu Aug 16 21:50:32.650 2012 (UTC - 7:00)
System Uptime: 0 days 0:00:58.351
Loading Kernel Symbols
...............................................................
................................................................
..........................................
Loading User Symbols
Loading unloaded module list
.......
*******************************************************************************
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *
*******************************************************************************
Use !analyze -v to get detailed debugging information.
BugCheck 1000008E, {c0000005, 78b3149b, 9b6afb0b, 0}
Unable to load image \??\C:\Program Files\Sandboxie\SbieDrv.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for SbieDrv.sys
*** ERROR: Module load completed but symbols could not be loaded for SbieDrv.sys
Probably caused by : SbieDrv.sys ( SbieDrv+1a028 )
Followup: MachineOwner
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Many thanks for your help. I shall try indeed

You're welcome, let us know how it goes.