I'm getting the same problem. This problem happened soon after XP SP3 upgrade. Issue is intermittent and happen during bootup. ******************************************************************************* * * * Bugcheck Analysis * * * ******************************************************************************* PAGE_FAULT_IN_NONPAGED_AREA (50) Invalid system memory was referenced. This cannot be protected by try-except, it must be protected by a Probe. Typically the address is just plain bad or it is pointing at freed memory. Arguments: Arg1: f000e2da, memory referenced. Arg2: 00000000, value 0 = read operation, 1 = write operation. Arg3: bf8adf54, If non-zero, the instruction address which referenced the bad memory address. Arg4: 00000000, (reserved) READ_ADDRESS: f000e2da FAULTING_IP: win32k!xxxSwitchDesktop+2c bf8adf54 f6431720 test byte ptr [ebx+17h],20h MM_INTERNAL_CODE: 0 IMAGE_NAME: win32k.sys DEBUG_FLR_IMAGE_TIMESTAMP: 48025f2a MODULE_NAME: win32k FAULTING_MODULE: bf800000 win32k DEFAULT_BUCKET_ID: DRIVER_FAULT BUGCHECK_STR: 0x50 PROCESS_NAME: csrss.exe TRAP_FRAME: f5833a14 -- (.trap 0xfffffffff5833a14) ErrCode = 00000000 eax=e214d560 ebx=f000e2c3 ecx=00000000 edx=00000000 esi=00000000 edi=804fa234 eip=bf8adf54 esp=f5833a88 ebp=f5833ac8 iopl=0 vif nv up ei ng nz na pe nc cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00090286 win32k!xxxSwitchDesktop+0x2c: bf8adf54 f6431720 test byte ptr [ebx+17h],20h ds:0023:f000e2da=?? Resetting default scope LAST_CONTROL_TRANSFER: from 8052036a to 804f9f33 STACK_TEXT: f5833994 8052036a 00000050 f000e2da 00000000 nt!KeBugCheckEx+0x1b f58339fc 80544578 00000000 f000e2da 00000000 nt!MmAccessFault+0x9a8 f58339fc bf8adf54 00000000 f000e2da 00000000 nt!KiTrap0E+0xd0 f5833ac8 bf89fc88 00000000 f000e2c3 00000000 win32k!xxxSwitchDesktop+0x2c f5833d30 bf884705 f5843490 00000002 f5833d54 win32k!RawInputThread+0x4c6 f5833d40 bf80110a f5843490 f5833d64 006ffff4 win32k!xxxCreateSystemThreads+0x60 f5833d54 8054161c 00000000 00000022 00000000 win32k!NtUserCallOneParam+0x23 f5833d54 7c90e4f4 00000000 00000022 00000000 nt!KiFastCallEntry+0xfc 006fffe0 75b6ba1a 75b67cf3 00000000 00000022 ntdll!KiFastSystemCallRet 00000000 f000ff53 f000e2c3 f000ff53 f000ff53 winsrv!NtUserCallOneParam+0xc WARNING: Frame IP not in any known module. Following frames may be wrong. 00000000 00000000 f000e2c3 f000ff53 f000ff53 0xf000ff53 STACK_COMMAND: kb FOLLOWUP_IP: win32k!xxxSwitchDesktop+2c bf8adf54 f6431720 test byte ptr [ebx+17h],20h SYMBOL_STACK_INDEX: 3 SYMBOL_NAME: win32k!xxxSwitchDesktop+2c FOLLOWUP_NAME: MachineOwner FAILURE_BUCKET_ID: 0x50_win32k!xxxSwitchDesktop+2c BUCKET_ID: 0x50_win32k!xxxSwitchDesktop+2c Followup: MachineOwner --------- 0: kd> lmvm win32k start end module name bf800000 bf9c2980 win32k (pdb symbols) c:\websymbols\win32k.pdb\B8354F59A2A341179030B80ACC7969972\win32k.pdb Loaded symbol image file: win32k.sys Image path: \SystemRoot\System32\win32k.sys Image name: win32k.sys Timestamp: Mon Apr 14 05:29:46 2008 (48025F2A) CheckSum: 001CC002 ImageSize: 001C2980 File version: 5.1.2600.5512 Product version: 5.1.2600.5512 File flags: 0 (Mask 3F) File OS: 40004 NT Win32 File type: 3.7 Driver File date: 00000000.00000000 Translations: 0409.04b0 CompanyName: Microsoft Corporation ProductName: Microsoft® Windows® Operating System InternalName: win32k.sys OriginalFilename: win32k.sys ProductVersion: 5.1.2600.5512 FileVersion: 5.1.2600.5512 (xpsp.080413-2105) FileDescription: Multi-User Win32 Driver LegalCopyright: © Microsoft Corporation. All rights reserved.
