Hi, I've recently encountered this problem that I see has affected many others.
The problem seemed to have occurred after I downloaded the Microsoft .NET Framework 3.5 Service Pack 1 from here. After I downloaded and installed it, I restarted my computer and the normal "Windows is configuring updates" screen appeared.
Nothing seemed wrong until I tried to log on, then the dreaded "An unauthorized change was made to Windows" box appeared amidst a black screen. I was unable to do anything at all, and had to restart my laptop several times before finally successfully logging on to Windows.
I've had my laptop for almost a year and a half, and have never encountered this problem before. Please help thanks.
Error code: [0xC004D401]
Diagnostic Report (1.9.0006.0):
-----------------------------------------
WGA Data-->
Validation Status: Invalid License
Validation Code: 50
Online Validation Code: 0xc004d401
Cached Validation Code: N/A, hr = 0xc004d401
Windows Product Key: *****-*****-FRJ4T-BKD6B-C47PP
Windows Product Key Hash: h84FlI5BStAbDjCJPyURCinXnx8=
Windows Product ID: 89576-OEM-7332141-00143
Windows Product ID Type: 2
Windows License Type: OEM SLP
Windows OS version: 6.0.6001.2.00010100.1.0.006
ID: {F9CD5331-975D-457A-90DF-29373F9FA901}(3)
Is Admin: Yes
TestCab: 0x0
WGA Version: N/A, hr = 0x80070002
Signed By: N/A, hr = 0x80070002
Product Name: Windows Vista (TM) Business
Architecture: 0x00000000
Build lab: 6001.vistasp1_gdr.080917-1612
TTS Error: K:20090129003132680-M:20090128220129702-
Validation Diagnostic:
Resolution Status: N/A
WgaER Data-->
ThreatID(s): N/A, hr = 0x80070002
Version: N/A, hr = 0x80070002
WGA 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
WGATray.exe Signed By: N/A, hr = 0x80070002
OGAAddin.dll Signed By: N/A, hr = 0x80070002
OGA Data-->
Office Status: 100 Genuine
Microsoft Office Standard 2007 - 100 Genuine
OGA Version: N/A, 0x80070002
Signed By: N/A, hr = 0x80070002
Office Diagnostics: 025D1FF3-365-80041010_025D1FF3-230-80041010_025D1FF3-231-1_025D1FF3-518-80040154_025D1FF3-238-80040154_025D1FF3-239-2_025D1FF3-245-80070002_025D1FF3-259-3
Browser Data-->
Proxy settings: N/A
User Agent: Mozilla/4.0 (compatible; MSIE 7.0; Win32)
Default Browser: C:\Program Files\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-->
Other data-->
Office Details: <GenuineResults><MachineData><UGUID>{F9CD5331-975D-457A-90DF-29373F9FA901}</UGUID><Version>1.9.0006.0</Version><OS>6.0.6001.2.00010100.1.0.006</OS><Architecture>x32</Architecture><PKey>*****-*****-*****-*****-C47PP</PKey><PID>89576-OEM-7332141-00143</PID><PIDType>2</PIDType><SID>S-1-5-21-4265383509-2510533817-3137972487</SID><SYSTEM><Manufacturer>LENOVO</Manufacturer><Model>8896A22</Model></SYSTEM><BIOS><Manufacturer>LENOVO</Manufacturer><Version>7LET39WW (1.09 )</Version><SMBIOSVersion major="2" minor="4"/><Date>20070514000000.000000+000</Date></BIOS><HWID>82300500018400FA</HWID><UserLCID>4809</UserLCID><SystemLCID>0409</SystemLCID><TimeZone>Malay Peninsula Standard Time(GMT+08:00)</TimeZone><iJoin>1</iJoin><SBID><stat>3</stat><msppid></msppid><name></name><model></model></SBID><OEM><OEMID>LENOVO</OEMID><OEMTableID>TP-7L </OEMTableID></OEM><GANotification/></MachineData><Software><Office><Result>100</Result><Products><Product GUID="{91120000-0012-0000-0000-0000000FF1CE}"><LegitResult>100</LegitResult><Name>Microsoft Office Standard 2007</Name><Ver>12</Ver><Val>CFAB6F2A928F77</Val><Hash>9nag41eIS058xXkUsATklj9+dPA=</Hash><Pid>81607-955-0076125-64585</Pid><PidType>1</PidType></Product></Products><Applications><App Id="16" Version="12" Result="100"/><App Id="18" Version="12" Result="100"/><App Id="1A" Version="12" Result="100"/><App Id="1B" Version="12" Result="100"/></Applications></Office></Software></GenuineResults>
Spsys.log Content: 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
Licensing Data-->
C:\Windows\system32\slmgr.vbs(1634, 5) (null): 0xC004D401
HWID Data-->
HWID Hash Current: NAAAAAEAAwABAAIAAQABAAAAAgABAAEAJJQEai3FGp8ALUaDwoMSbfZw8vRGBtr6LhoqhQ==
OEM Activation 1.0 Data-->
N/A
OEM Activation 2.0 Data-->
BIOS valid for OA 2.0: yes
Windows marker version: 0x20000
OEMID and OEMTableID Consistent: yes
BIOS Information:
ACPI Table Name OEMID Value OEMTableID Value
APIC LENOVO TP-7L
FACP LENOVO TP-7L
HPET LENOVO TP-7L
BOOT LENOVO TP-7L
MCFG LENOVO TP-7L
SSDT LENOVO TP-7L
ECDT LENOVO TP-7L
TCPA LENOVO TP-7L
SLIC LENOVO TP-7L
ASF! LENOVO TP-7L
SSDT LENOVO TP-7L
SSDT LENOVO TP-7L
SSDT LENOVO TP-7L
SSDT LENOVO TP-7L
