Questions:Hi guys,
I hope someone can give me some advice. Non-computer literate girlfriend bought an ACER laptop with OS pre-installed and no disks. The laptop was purchased from a reputable retailer in a shopping mall about 4 years ago and was primarily used for email, facebook, skype and games. I gave my girlfriend some basic instruction but noticed she had no on-line protection so I downloaded a firewall, AV and cleaning applications. I checked and cleaned up every few months, finding the occasional trojan etc, and also downloaded updates. She reported some performance problems when I was away working and took the laptop to the mall who identified and removed a virus. Another issue was that the battery started to fail and had to be replaced last year. The only other significant issue was that I tried to update to Win 8 and all started well but the install failed and further attempts just resulted in the disk not being read and a message saying that UDF system was needed. I downloaded the recommended UDF reader but no change. With all the hype surrounding Win 10, I have been cleaning and updating the laptop over the past week and noticed a lot of some Windows Update download failures. I managed to get these to download and install in batches although this sometimes took 3-4 times. Sfc /scannow would not get past 44% until I ran chkdsk / r and /f and then everything was okay except that now Windows is no longer activated and does not accept the product key. I downloaded and ran the System Update Readiness tool and now have 'This copy of Windows is not genuine' showing on a black background. I believe that the Win 7 Ult 64 Build 7601 OS is genuine (although I did not appreciate that any previous lack of Windows activation would result in a subsequent issue and may not have been activated properly by my girlfriend). I do not understand how the OS cannot be genuine and cannot be activated with the product key given. MGA Diag report:

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

Validation Code: 50
Cached Online Validation Code: 0x0
Windows Product Key: *****-*****-TMVMJ-BBMRX-3MBMV
Windows Product Key Hash: 55n8g6xdzhe4AOWhmTzdzQoLfa4=
Windows Product ID: 00426-292-0000007-85987
Windows Product ID Type: 5
Windows License Type: Retail
Windows OS version: 6.1.7601.2.00010100.1.0.001
ID: 4BB0A4EA-21E2-4FAF-9A99-237C7A44D8E8(3)
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: 7601.win7sp1_gdr.150715-0600
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: N/A
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: Disabled
Active scripting: Allowed
Script ActiveX controls marked as safe for scripting: Allowed

File Scan Data-->

Other data-->
Office Details: <GenuineResults><MachineData><UGUID>4BB0A4EA-21E2-4FAF-9A99-237C7A44D8E8</UGUID><Version>1.9.0027.0</Version><OS>6.1.7601.2.00010100.1.0.001</OS><Architecture>x64</Architecture><PKey>*****-*****-*****-*****-3MBMV</PKey><PID>00426-292-0000007-85987</PID><PIDType>5</PIDType><SID>S-1-5-21-4015645878-721779442-2214506789</SID><SYSTEM><Manufacturer>Acer</Manufacturer><Model>Aspire 4750</Model></SYSTEM><BIOS><Manufacturer>Phoenix Technologies Ltd.</Manufacturer><Version>V1.23</Version><SMBIOSVersion major="2" minor="6"/><Date>20110428000000.000000+000</Date></BIOS><HWID>60D53107018400FE</HWID><UserLCID>0809</UserLCID><SystemLCID>0409</SystemLCID><TimeZone>SE Asia Standard Time(GMT+07:00)</TimeZone><iJoin>0</iJoin><SBID><stat>3</stat><msppid></msppid><name></name><model></model></SBID><OEM><OEMID>ACRSYS</OEMID><OEMTableID>ACRPRDCT</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, RETAIL channel
Activation ID: ac96e1a8-6cc4-4310-a4ff-332ce77fb5b8
Application ID: 55c92734-d682-4d71-983e-d6ec3f16059f
Extended PID: 00426-00170-292-000000-00-2057-7601.0000-2292015
Installation ID: 011886673954799112982524809270542905882491889822959296
Processor Certificate URL:
Machine Certificate URL:
Use License URL:
Product Key Certificate URL:
Partial Product Key: 3MBMV
License Status: Notification
Notification Reason: 0xC004F009 (grace time expired).
Remaining Windows rearm count: 2
Trusted time: 17/08/2015 02:58:26

Windows Activation Technologies-->
HrOffline: 0x00000000
HrOnline: 0xC004C532
HealthStatus: 0x0000000000000000
Event Time Stamp: 8:15:2015 20:09
ActiveX: Registered, Version: 7.1.7600.16395
Admin Service: Registered, Version: 7.1.7600.16395
HealthStatus Bitmask Output:

HWID Data-->

OEM Activation 1.0 Data-->

OEM Activation 2.0 Data-->
BIOS valid for OA 2.0: no, invalid SLIC table
Windows marker version: N/A
OEMID and OEMTableID Consistent: N/A
BIOS Information: 
  ACPI Table Name OEMID Value OEMTableID Value
Any advice and help would be very much appreciated.

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