Ciao Manuela, direi di provare anche questo:
esegui il tool che scarichi da questo link:
http://go.microsoft.com/fwlink/?linkid=52012
Clicca su "continue" poi quando appare il risultato (una lista di dati) clicca "copy" ed incolla il risultato in un post.
Diagnostic Report (1.9.0027.0):
-----------------------------------------
Windows Validation Data-->
Validation Code: 0x8004FE21
Cached Online Validation Code: N/A, hr = 0xc004f012
Windows Product Key: *****-*****-2PGG6-DFP8T-XDV8W
Windows Product Key Hash: YpqZVZaqgPLt7dTS5+7wIKSdn+U=
Windows Product ID: 00359-OEM-9821521-82161
Windows Product ID Type: 8
Windows License Type: COA SLP
Windows OS version: 6.1.7601.2.00010300.1.0.003
ID: {CFC50E80-E16A-4519-B9AB-D177DB392167}(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.110622-1506
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)\Mozilla Firefox\firefox.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\watux.exe[7.1.7600.16395], Hr = 0x80092003
Other data-->
Office Details: <GenuineResults><MachineData><UGUID>{CFC50E80-E16A-4519-B9AB-D177DB392167}</UGUID><Version>1.9.0027.0</Version><OS>6.1.7601.2.00010300.1.0.003</OS><Architecture>x64</Architecture><PKey>*****-*****-*****-*****-XDV8W</PKey><PID>00359-OEM-9821521-82161</PID><PIDType>8</PIDType><SID>S-1-5-21-481898051-2179028608-1981545011</SID><SYSTEM><Manufacturer>Sony Corporation</Manufacturer><Model>VPCCA3C5E</Model></SYSTEM><BIOS><Manufacturer>American Megatrends Inc.</Manufacturer><Version>R2100V2</Version><SMBIOSVersion major="2" minor="7"/><Date>20110824000000.000000+000</Date></BIOS><HWID>05173C07018400FE</HWID><UserLCID>0410</UserLCID><SystemLCID>0410</SystemLCID><TimeZone>ora solare Europa occidentale(GMT+01:00)</TimeZone><iJoin>0</iJoin><SBID><stat>3</stat><msppid></msppid><name></name><model></model></SBID><OEM><OEMID>Sony</OEMID><OEMTableID>VAIO</OEMTableID></OEM><GANotification/></MachineData><Software><Office><Result>109</Result><Products/><Applications/></Office></Software></GenuineResults>
Spsys.log Content: 0x80070002
Licensing Data-->
Versione servizio di gestione licenze software: 6.1.7601.17514
Nome: Windows(R) 7, HomePremium edition
Descrizione: Windows Operating System - Windows(R) 7, OEM_COA_SLP channel
ID di attivazione5e017a8a-f3f9-4167-b1bd-ba3e236a4d8f
ID applicazione: 55c92734-d682-4d71-983e-d6ec3f16059f
PID esteso: 00359-00196-215-282161-02-1040-7601.0000-0692012
ID di installazione: 018346730295836182493201543991166016395410088784965374
URL certificato processore: http://go.microsoft.com/fwlink/?LinkID=88338
URL certificato computer: http://go.microsoft.com/fwlink/?LinkID=88339
URL licenza d'uso: http://go.microsoft.com/fwlink/?LinkID=88341
URL certificato codice "Product Key": http://go.microsoft.com/fwlink/?LinkID=88340
Codice "Product Key" parziale: XDV8W
Stato licenza: concesso in licenza
Numero di ripristini Windows rimanenti: 3
Ora attendibile: 09/03/2012 23:17:32
Windows Activation Technologies-->
HrOffline: 0x8004FE21
HrOnline: N/A
HealthStatus: 0x0000000000000008
Event Time Stamp: 3:9:2012 22:54
ActiveX: Registered, Version: 7.1.7600.16395
Admin Service: Registered, Version: 7.1.7600.16395
HealthStatus Bitmask Output:
Tampered File: %systemroot%\system32\wat\watux.exe
HWID Data-->
HWID Hash Current: OAAAAAIAAwABAAIAAAABAAAABAABAAEAonau8XcWPEi+koAyXDqkk5r0jpHuhxjZDiP+d94zLnM=
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 Name OEMID Value OEMTableID Value
APIC Sony VAIO
FACP Sony VAIO
HPET Sony VAIO
MCFG Sony VAIO
SLIC Sony VAIO
SSDT Sony VAIO
SSDT Sony VAIO
ECDT Sony VAIO
SSDT Sony VAIO
SSDT Sony VAIO
SSDT Sony VAIO