Error 0XC004E003 after going back to Win7 from trying Win10

Hi. First time poster here. Fairly proficient but no expert by far.
My question is what did going back to Win7 from Win10 do to cause me to have to reactivate.

The history is it was bought used with Vista as the original op system. He upgraded to Win7 with what appears was an OEM/SLP. I was able to install Service Pack 1 and all the updates, never having any issues. No need to activate or validation ever came up for 2.5 years.

After I tried Win10 and went back to Win7 two days later everything was fine until 30 days went by.
Only THEN did the message start to appear: Your Windows is not genuine.
Doing the MGA Diagnostics tool shows it is genuine.
Microsoft says the key number is blocked now causing the error.
If I had never tried Win10 I believe this issue would not have happened at all.

All these months I never had a activation or validation issue. I've read where some others have this issue also after 30 days have gone by after reverting back to Win7.

I'm probably out of luck getting the key unblocked as they say they never do that.

What happened that caused me to have to re activate? What caused Windows to now see it as not genuine?
And only AFTER 30 days expired?

Here is the report:


Diagnostic Report (1.9.0019.0):
-----------------------------------------
WGA Data-->
Validation Status: Genuine
Validation Code: 0

Cached 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: 6.1.7601.2.00010100.1.0.001
ID: {6F53E6CF-7D43-48DF-8CE6-07CFAACE5B59}(3)
Is Admin: Yes
TestCab: 0x0
WGA Version: N/A, hr = 0x80070002
Signed By: N/A, hr = 0x80070002
Product Name: Windows 7 Ultimate
Architecture: 0x00000000
Build lab: 7601.win7sp1_gdr.160211-0600
TTS Error:
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
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: 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\Internet Explorer\IEXPLORE.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 = 0x80070002]
File Mismatch: C:\Windows\system32\wat\npwatweb.dll[hr = 0x80070002]
File Mismatch: C:\Windows\system32\wat\watux.exe[hr = 0x80070002]
File Mismatch: C:\Windows\system32\wat\watweb.dll[hr = 0x80070002]

Other data-->
Office Details: <GenuineResults><MachineData><UGUID>{6F53E6CF-7D43-48DF-8CE6-07CFAACE5B59}</UGUID><Version>1.9.0019.0</Version><OS>6.1.7601.2.00010100.1.0.001</OS><Architecture>x32</Architecture><PKey>*****-*****-*****-*****-P4K27</PKey><PID>00426-OEM-8992662-00400</PID><PIDType>2</PIDType><SID>S-1-5-21-3023267292-1255582898-307114556</SID><SYSTEM><Manufacturer>Hewlett-Packard</Manufacturer><Model>HP Pavilion dv6000 (RV216UA#ABA) </Model></SYSTEM><BIOS><Manufacturer>Hewlett-Packard</Manufacturer><Version>F.16 </Version><SMBIOSVersion major="2" minor="4"/><Date>20070202000000.000000+000</Date></BIOS><HWID>5ACF3D07018400FE</HWID><UserLCID>0409</UserLCID><SystemLCID>0409</SystemLCID><TimeZone>Eastern Standard Time(GMT-05:00)</TimeZone><iJoin>0</iJoin><SBID><stat>3</stat><msppid></msppid><name></name><model></model></SBID><OEM><OEMID>HPQOEM</OEMID><OEMTableID>SLIC-MPC</OEMTableID></OEM><GANotification/></MachineData><Software><Office><Result>109</Result><Products/><Applications/></Office></Software></GenuineResults>

Spsys.log Content: 0x80070002

Licensing Data-->
Software licensing service version: 6.1.7601.17514

Name: Windows(R) 7, Ultimate edition
Description: Windows Operating System - Windows(R) 7, OEM_SLP channel
Activation ID: 7cfd4696-69a9-4af7-af36-ff3d12b6b6c8
Application ID: 55c92734-d682-4d71-983e-d6ec3f16059f
Extended PID: 00426-00178-926-600400-02-1033-7601.0000-1322016
Installation ID: 017254833073322141024242224062997502280752198101412333
Processor Certificate URL: SpcService Web Service
Machine Certificate URL: RacService Web Service
Use License URL: UseLicenseService Web Service
Product Key Certificate URL: PkcService Web Service
Partial Product Key: P4K27
License Status: Initial grace period
Time remaining: 41580 minute(s) (28 day(s))
Remaining Windows rearm count: 3
Trusted time: 5/11/2016 3:12:31 PM

Windows Activation Technologies-->
HrOffline: N/A
HrOnline: N/A
HealthStatus: N/A
Event Time Stamp: N/A
WAT Activex: Not Registered - 0x80040154
WAT Admin Service: Not Registered - 0x80040154

HWID Data-->
HWID Hash Current: OgAAAAEABgABAAIAAAABAAAAAwABAAEAJJS8vggDhvPWQ2jOSOQWu6A0uLd4awK8qqWmZ9Itr9L0SA==

OEM Activation 1.0 Data-->
N/A

OEM Activation 2.0 Data-->
BIOS valid for OA 2.0: yes
Windows marker version: 0x0
OEMID and OEMTableID Consistent: yes
BIOS Information:
ACPI Table Name OEMID Value OEMTableID Value
APIC HP 30BB
FACP INTEL CALISTGA
HPET HP 30BB
BOOT HP 30BB
MCFG HP 30BB
TCPA HP 30BB
APIC HP 30BB
SLIC HPQOEM SLIC-MPC
SSDT HP 30BB
SSDT HP 30BB
SSDT HP 30BB
SSDT HP 30BB