Windows 7 suddenly not genuine

so one day I was on my computer and we had a power surge. files on my hard drive here corrupted and they happened to be the windows activation ones because when my computer was done doing it hard drive check my windows was suddenly not genuine. thankfully i had a back up, so i backed up all the system files to the day before and everything was fine for about 30 min. after that my windows suddenly decided it was no longer genuine again. here is the diagnosis test I ran hopefully we can fix this.

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

Validation Code: 50
Cached Online Validation Code: 0xc004c4a8
Windows Product Key: *****-*****-8H797-V324K-DFHCX
Windows Product Key Hash: u5TYW2q3HPm4ponRddOAYvFQ0As=
Windows Product ID: 00359-OEM-8704376-19908
Windows Product ID Type: 3
Windows License Type: OEM System Builder
Windows OS version: 6.1.7601.2.00010300.1.0.003
ID: {B6A7C164-708F-416C-B551-97C873E2B304}(1)
Is Admin: Yes
TestCab: 0x0
LegitcheckControl ActiveX: N/A, hr = 0x80070002
Signed By: N/A, hr = 0x80070002
Product Name: Windows 7 Home Premium
Architecture: 0x00000009
Build lab: 7601.win7sp1_gdr.150525-0603
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: 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:
User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Win32)
Default Browser: C:\Program Files (x86)\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: Allowed
Active scripting: Allowed
Script ActiveX controls marked as safe for scripting: Allowed

File Scan Data-->

Other data-->
Office Details: <GenuineResults><MachineData><UGUID>{B6A7C164-708F-416C-B551-97C873E2B304}</UGUID><Version>1.9.0027.0</Version><OS>6.1.7601.2.00010300.1.0.003</OS><Architecture>x64</Architecture><PKey>*****-*****-*****-*****-DFHCX</PKey><PID>00359-OEM-8704376-19908</PID><PIDType>3</PIDType><SID>S-1-5-21-3838365575-3688908983-3671278454</SID><SYSTEM><Manufacturer>System manufacturer</Manufacturer><Model>System Product Name</Model></SYSTEM><BIOS><Manufacturer>American Megatrends Inc.</Manufacturer><Version>1903</Version><SMBIOSVersion major="2" minor="7"/><Date>20130819000000.000000+000</Date></BIOS><HWID>33A73C07018400FE</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/><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, HomePremium edition
Description: Windows Operating System - Windows(R) 7, OEM_COA_NSLP channel
Activation ID: 586bc076-c93d-429a-afe5-a69fbc644e88
Application ID: 55c92734-d682-4d71-983e-d6ec3f16059f
Extended PID: 00359-00174-043-719908-02-1033-7601.0000-2142015
Installation ID: 000493163633600006067053655540832196821524447614272340
Processor Certificate URL: http://go.microsoft.com/fwlink/?LinkID=88338
Machine Certificate URL: http://go.microsoft.com/fwlink/?LinkID=88339
Use License URL: http://go.microsoft.com/fwlink/?LinkID=88341
Product Key Certificate URL: http://go.microsoft.com/fwlink/?LinkID=88340
Partial Product Key: DFHCX
License Status: Notification
Notification Reason: 0xC004F200 (non-genuine).
Remaining Windows rearm count: 5
Trusted time: 8/5/2015 4:24:38 PM

Windows Activation Technologies-->
HrOffline: 0x00000000
HrOnline: 0xC004C4A8
HealthStatus: 0x0000000000000000
Event Time Stamp: 7:31:2015 12:15
ActiveX: Registered, Version: 7.1.7600.16395
Admin Service: Registered, Version: 7.1.7600.16395
HealthStatus Bitmask Output:


HWID Data-->
HWID Hash Current: NAAAAAEAAwABAAEAAAADAAAAAgABAAEAHKJ0JUAuClNkx3TEgDNwW4pcgm3STj5K8beWYw==

OEM Activation 1.0 Data-->
N/A

OEM Activation 2.0 Data-->
BIOS valid for OA 2.0: yes, but no SLIC table
Windows marker version: N/A
OEMID and OEMTableID Consistent: N/A
BIOS Information:
ACPI Table Name OEMID Value OEMTableID Value
APIC ALASKA A M I
FACP ALASKA A M I
HPET ALASKA A M I
MCFG ALASKA A M I
FPDT ALASKA A M I
SSDT SataRe SataTabl
SSDT SataRe SataTabl
SSDT SataRe SataTabl