BSOD while away from keyboard

Hello.

I have a problem that is burning my mind out.
I'm frequently getting BSOD usually when I leave my laptop downloading stuff while I'm away from keyboard.
My steps:
1. Start downloading
2. Put on the Change User screen (so nobody will mess it up, as my User has a hard password)
3. Close flat screen (to save energy)

Noticed almost 100% of the crashes happens as soon I do steps 2 and 3. Within minutes, right after.

--- I'm sure there will be another BSOD crash recorded some time ago (something USB related), but the problem was already solved (a bad quality cheap USB hub). ---

Thanks a lot, buddies.

Got it again, on the same conditions.

Is anybody willing to help me?

Today I had an PAGE_FAULT_IN_NONPAGED_AREA BSOD... Please help me!

Diagnostic Report (1.9.0027.0):
-----------------------------------------
Windows Validation Data-->

Validation Code: 0
Cached Online Validation Code: N/A, hr = 0xc004f012
Windows Product Key: *****-*****-X92GV-V7DCV-P4K27
Windows Product Key Hash: aU2z1/fnhnLHmhBm699qYZT2E6s=
Windows Product ID: 00426-OEM-8992662-00400
Windows Product ID Type: 2
Windows License Type: OEM SLP
Windows OS version: 6.1.7600.2.00010100.0.0.001
ID: {F1EEA059-E751-4514-9CF9-DA0D69A34324}(1)
Is Admin: Yes
TestCab: 0x0
LegitcheckControl ActiveX: N/A, hr = 0x80070002
Signed By: N/A, hr = 0x80070002
Product Name: Windows 7 Ultimate
Architecture: 0x00000009
Build lab: 7600.win7_gdr.120503-2030
TTS Error:
Validation Diagnostic:
Resolution Status: N/A

Vista WgaER Data-->
ThreatID(s): N/A, hr = 0x80070002
Version: N/A, hr = 0x80070002

Windows XP Notifications Data-->
Cached Result: N/A, hr = 0x80070002
File Exists: No
Version: N/A, hr = 0x80070002
WgaTray.exe Signed By: N/A, hr = 0x80070002
WgaLogon.dll Signed By: N/A, hr = 0x80070002

OGA Notifications Data-->
Cached Result: N/A, hr = 0x80070002
Version: N/A, hr = 0x80070002
OGAExec.exe Signed By: N/A, hr = 0x80070002
OGAAddin.dll Signed By: N/A, hr = 0x80070002

OGA Data-->
Office Status: 103 Blocked VLK
Microsoft Office Enterprise 2007 - 103 Blocked VLK
OGA Version: N/A, 0x80070002
Signed By: N/A, hr = 0x80070002
Office Diagnostics: 025D1FF3-364-80041010_025D1FF3-229-80041010_025D1FF3-230-1_025D1FF3-517-80040154_025D1FF3-237-80040154_025D1FF3-238-2_025D1FF3-244-80070002_025D1FF3-258-3

Browser Data-->
Proxy settings: N/A
User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Win32)
Default Browser: C:\Program Files (x86)\Mozilla Firefox\firefox.exe
Download signed ActiveX controls: Prompt
Download unsigned ActiveX controls: Disabled
Run ActiveX controls and plug-ins: Allowed
Initialize and script ActiveX controls not marked as safe: Disabled
Allow scripting of Internet Explorer Webbrowser control: Disabled
Active scripting: Allowed
Script ActiveX controls marked as safe for scripting: Allowed

File Scan Data-->
File Mismatch: C:\Windows\system32\wat\watadminsvc.exe[Hr = 0x80070005]
File Mismatch: C:\Windows\system32\wat\watux.exe[Hr = 0x80070005]
File Mismatch: C:\Windows\system32\systemcpl.dll[6.1.7600.16385], Hr = 0x800b0100

Other data-->
Office Details: <GenuineResults><MachineData><UGUID>{F1EEA059-E751-4514-9CF9-DA0D69A34324}</UGUID><Version>1.9.0027.0</Version><OS>6.1.7600.2.00010100.0.0.001</OS><Architecture>x64</Architecture><PKey>*****-*****-*****-*****-P4K27</PKey><PID>00426-OEM-8992662-00400</PID><PIDType>2</PIDType><SID>S-1-5-21-4123240-3711278271-1251234290</SID><SYSTEM><Manufacturer>OEM </Manufacturer><Model>I42IL1 </Model></SYSTEM><BIOS><Manufacturer>Phoenix </Manufacturer><Version>1.02CE</Version><SMBIOSVersion major="2" minor="5"/><Date>20090715000000.000000+000</Date></BIOS><HWID>42B83607018400F8</HWID><UserLCID>0416</UserLCID><SystemLCID>0416</SystemLCID><TimeZone>Hora oficial do Brasil(GMT-03:00)</TimeZone><iJoin>0</iJoin><SBID><stat>3</stat><msppid></msppid><name></name><model></model></SBID><OEM><OEMID>LENOVO</OEMID><OEMTableID>TP-7X </OEMTableID></OEM><GANotification/></MachineData><Software><Office><Result>103</Result><Products><Product GUID="{90120000-0030-0000-0000-0000000FF1CE}"><LegitResult>103</LegitResult><Name>Microsoft Office Enterprise 2007</Name><Ver>12</Ver><Val>ACD7202654E586</Val><Hash>fFic3JgCreGGRxyF8uMWB4R4Jcg=</Hash><Pid>89388-707-1528066-65846</Pid><PidType>14</PidType></Product></Products><Applications><App Id="15" Version="12" Result="103"/><App Id="16" Version="12" Result="103"/><App Id="18" Version="12" Result="103"/><App Id="19" Version="12" Result="103"/><App Id="1A" Version="12" Result="103"/><App Id="1B" Version="12" Result="103"/><App Id="44" Version="12" Result="103"/><App Id="A1" Version="12" Result="103"/><App Id="BA" Version="12" Result="103"/></Applications></Office></Software></GenuineResults>

Spsys.log Content: 0x80070002

Licensing Data-->
Versão do serviço de licença do software: 6.1.7600.16385

Nome: Windows(R) 7, Ultimate edition
Descrição: Windows Operating System - Windows(R) 7, OEM_SLP channel
Identificação da Ativação: 7cfd4696-69a9-4af7-af36-ff3d12b6b6c8
Identificação da Aplicação: 55c92734-d682-4d71-983e-d6ec3f16059f
PID estendido: 00426-00178-926-600400-02-1046-7600.0000-1932013
Identificação da Instalação: 011062852674878126924036712293791166320022560933315270
URL do Certificado do Processador: http://go.microsoft.com/fwlink/?LinkID=88338
URL do Certificado da Máquina: http://go.microsoft.com/fwlink/?LinkID=88339
URL da Licença de Uso: http://go.microsoft.com/fwlink/?LinkID=88341
URL do Certificado da Chave do Produto (Product Key): http://go.microsoft.com/fwlink/?LinkID=88340
Chave do Produto (Product Key) Parcial: P4K27
Status da Licença: Licenciado
Contagem de rearmação restante do Windows: 3
Hora confiável: 23/08/2013 12:55:40

Windows Activation Technologies-->
HrOffline: 0x00000000
HrOnline: N/A
HealthStatus: 0x0000000000000000
Event Time Stamp: N/A
ActiveX: Registered, Version: 7.1.7600.16395
Admin Service: Not Registered - 0x80070005
HealthStatus Bitmask Output:


HWID Data-->
HWID Hash Current: OAAAAAIABAABAAIAAQABAAAAAgABAAEA6GGwIxU/+gO4rf7+4IZQ8drgDGjulXf2WDXu0+ShRso=

OEM Activation 1.0 Data-->
N/A

OEM Activation 2.0 Data-->
BIOS valid for OA 2.0: yes
Windows marker version: 0x20001
OEMID and OEMTableID Consistent: yes
BIOS Information:
ACPI Table Name OEMID Value OEMTableID Value
APIC PTLTD APIC
FACP INTEL CRESTLNE
HPET INTEL CRESTLNE
BOOT PTLTD $SBFTBL$
MCFG INTEL CRESTLNE
SLIC LENOVO TP-7X
SSDT BrtRef DD01BRT
SSDT BrtRef DD01BRT
SSDT BrtRef DD01BRT
SSDT BrtRef DD01BRT