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:

Code:
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: 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: 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-->
HWID Hash Current: LgAAAAEAAQABAAEAAQABAAAAAgABAAEA6GF8TLpKaHm6XpabjkqKPOKtHmYucw==

OEM Activation 1.0 Data-->
N/A

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
  APIC ACRSYS ACRPRDCT
  FACP ACRSYS ACRPRDCT
  HPET ACRSYS ACRPRDCT
  MCFG ACRSYS ACRPRDCT
  SLIC ACRSYS ACRPRDCT
  SSDT ACRSYS PtidDevc
  ASF! ACRSYS ACRPRDCT
  SSDT ACRSYS PtidDevc
  SSDT ACRSYS PtidDevc
  UEFI ACRSYS ACRPRDCT
  UEFI ACRSYS ACRPRDCT
  UEFI ACRSYS ACRPRDCT
=====
Any advice and help would be very much appreciated.

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