Windows 7 - BSOD after fresh install and login

Microsoft (R) Windows Debugger Version 6.11.0001.404 X86
Copyright (c) Microsoft Corporation. All rights reserved.


Loading Dump File [C:\Users\K\Desktop\New folder (4)\051510-22468-01.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;srv*e:\symbols
*http://msdl.microsoft.com/download/symbols
Executable search path is: 
Windows 7 Kernel Version 7600 UP Free x64
Product: WinNt, suite: TerminalServer SingleUserTS
Built by: 7600.16385.amd64fre.win7_rtm.090713-1255
Machine Name:
Kernel base = 0xfffff800`02656000 PsLoadedModuleList = 0xfffff800`02893e50
Debug session time: Sat May 15 14:22:37.092 2010 (GMT-4)
System Uptime: 0 days 0:04:18.358
Loading Kernel Symbols
...............................................................
................................................................
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Loading User Symbols
Loading unloaded module list
....
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*                        Bugcheck Analysis                                    *
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Use !analyze -v to get detailed debugging information.

BugCheck 3B, {c0000005, fffff800026fac8d, fffff88007265120, 0}

Probably caused by : memory_corruption ( nt!MiGetNextNode+2d )

Followup: MachineOwner
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kd> !analyze -v
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*                        Bugcheck Analysis                                    *
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SYSTEM_SERVICE_EXCEPTION (3b)
An exception happened while executing a system service routine.
Arguments:
Arg1: 00000000c0000005, Exception code that caused the bugcheck
Arg2: fffff800026fac8d, Address of the exception record for the exception that caused the bugcheck
Arg3: fffff88007265120, Address of the context record for the exception that caused the bugcheck
Arg4: 0000000000000000, zero.

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


EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%08lx referenced memory at 0x%08lx. The memory could not be %s.

FAULTING_IP: 
nt!MiGetNextNode+2d
fffff800`026fac8d 488b4808        mov     rcx,qword ptr [rax+8]

CONTEXT:  fffff88007265120 -- (.cxr 0xfffff88007265120)
rax=0000020000000000 rbx=fffffa8001c47c40 rcx=fffffa8001c47c40
rdx=fffffa8001ade9a0 rsi=fffffa8001c12b30 rdi=fffffa8001c12630
rip=fffff800026fac8d rsp=fffff88007265b08 rbp=0000000000000000
 r8=0000000000000000  r9=0000000000000001 r10=fffff800029de1fc
r11=00000000003156fc r12=0000000000001000 r13=0000000000000000
r14=00000000000a0fff r15=00000000000a0000
iopl=0         nv up ei pl nz na po nc
cs=0010  ss=0018  ds=002b  es=002b  fs=0053  gs=002b             efl=00010206
nt!MiGetNextNode+0x2d:
fffff800`026fac8d 488b4808        mov     rcx,qword ptr [rax+8] ds:002b:00000200`00000008=????????????????
Resetting default scope

CUSTOMER_CRASH_COUNT:  1

DEFAULT_BUCKET_ID:  VISTA_DRIVER_FAULT

BUGCHECK_STR:  0x3B

PROCESS_NAME:  sidebar.exe

CURRENT_IRQL:  0

LAST_CONTROL_TRANSFER:  from fffff800029dddbf to fffff800026fac8d

STACK_TEXT:  
fffff880`07265b08 fffff800`029dddbf : 00000000`0027e100 fffffa80`01c12b30 fffff8a0`01ab1a20 fffff8a0`01db21d0 : nt!MiGetNextNode+0x2d
fffff880`07265b10 fffff800`029de25b : 00000000`00000000 00000000`000a0000 fffffa80`00000001 00000000`00000001 : nt!MiUnmapViewOfSection+0x11f
fffff880`07265bd0 fffff800`026c7153 : fffffa80`01c12630 fffff880`07265ca0 fffffa80`01c12b30 fffffa80`01abd880 : nt!NtUnmapViewOfSection+0x5f
fffff880`07265c20 00000000`7718015a : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiSystemServiceCopyEnd+0x13
00000000`0027da98 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0x7718015a


FOLLOWUP_IP: 
nt!MiGetNextNode+2d
fffff800`026fac8d 488b4808        mov     rcx,qword ptr [rax+8]

SYMBOL_STACK_INDEX:  0

SYMBOL_NAME:  nt!MiGetNextNode+2d

FOLLOWUP_NAME:  MachineOwner

MODULE_NAME: nt

DEBUG_FLR_IMAGE_TIMESTAMP:  4a5bc600

STACK_COMMAND:  .cxr 0xfffff88007265120 ; kb

IMAGE_NAME:  memory_corruption

FAILURE_BUCKET_ID:  X64_0x3B_nt!MiGetNextNode+2d

BUCKET_ID:  X64_0x3B_nt!MiGetNextNode+2d

Followup: MachineOwner
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