Once flagged as non-genuine, win7 will stay non-genuine, even with a change of key. To get back to genuine status, rearm the pc with the command: slmgr /rearm Restart, then enter the new key: slmgr /ipk <Product Key>
Like all the other you dont search before posting.. Follow orb's instructions and you should be good.
I restarted, re-armed, entered the new key, and tried to validate again. Still having the same problem. I also uninstalled the update that caused the problem. Here's the output from mgadiag.exe I replaced anything that looked long and unique-enough as a serial-type number with the word *MUNGE*. I also had to delete all the links as my post count is too low. Diagnostic Report (1.9.0027.0): ----------------------------------------- Windows Validation Data--> Validation Code: 0 Cached Online Validation Code: N/A, hr = 0xc004f012 Windows Product Key: *****-*****-PJW6W-9GK29-TMPWP Windows Product Key *MUNGE* Windows Product ID: *MUNGE* Windows Product ID Type: 2 Windows License Type: OEM SLP Windows OS version: 6.1.7600.2.00010100.0.0.001 ID: *MUNGE*(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.100226-1909 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: 109 N/A OGA Version: N/A, 0x80070002 Signed By: N/A, hr = 0x80070002 Office Diagnostics: *MUNGE* Browser Data--> Proxy settings: N/A User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Win32) Default Browser: C:\Users\me\AppData\Local\Google\Chrome\Application\chrome.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 = 0x80070003] File Mismatch: C:\Windows\system32\wat\npwatweb.dll[Hr = 0x80070003] File Mismatch: C:\Windows\system32\wat\watux.exe[Hr = 0x80070003] File Mismatch: C:\Windows\system32\wat\watweb.dll[Hr = 0x80070003] Other data--> Spsys.log Content: 0x80070002 Licensing Data--> Software licensing service version: 6.1.7600.16385 Name: Windows(R) 7, OCUR add-on for Ultimate,HomePremium,Enterprise,Professional,ServerHomePremium Description: Windows Operating System - Windows(R) 7, RETAIL channel Activation ID: *MUNGE* Application ID: *MUNGE* Extended PID: *MUNGE* Installation ID: *MUNGE* Partial Product Key: J64XX License Status: Unlicensed Remaining Windows rearm count: 0 Trusted time: 9/13/2010 8:46:56 AM Name: Windows(R) 7, Ultimate edition Description: Windows Operating System - Windows(R) 7, OEM_SLP channel Activation ID: *MUNGE* Application ID: *MUNGE* Extended PID: *MUNGE* Installation ID: *MUNGE* Partial Product Key: TMPWP License Status: Licensed Remaining Windows rearm count: 0 Trusted time: 9/13/2010 8:46:56 AM Windows Activation Technologies--> HrOffline: 0x00000000 HrOnline: 0xC004C4A2 HealthStatus: 0x0000000000000000 Event Time Stamp: 9:7:2010 10:49 ActiveX: Not Registered - 0x80040154 Admin Service: Not Registered - 0x80040154 HealthStatus Bitmask Output: HWID Data--> HWID Hash Current: *MUNGE* 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 NameOEMID ValueOEMTableID Value APICACRSYSACRPRDCT FACPINTEL CRESTLNE HPETINTEL CRESTLNE BOOTACRSYSACRPRDCT MCFGINTEL CRESTLNE OEMSGATEWASYSTEM SLICACRSYSACRPRDCT SSDTPmRefCpuPm