Pour l'installation propre de Windows 7, Sony préconise les installations des logiciels dans cet ordre :
 
1. Windows 7
2. Intel Chipset
3. Nvidia Graphics
4. Audio
5. Ethernet
6. MS Card
7. SD Card
8. Pointing Device
9. Sony Firmware Extension
10. Bluetooth
11. Intel ME
12. Intel Wireless
13. Turbo Boost
14. TPM (if needed)
15. Setting Utility Series
16. Sony Shared Library
17. VAIO Event Services
18. VAIO Control Center
19. Battery Checker
20. VAIO Location Utility
21. VAIO Power Management
22. VAIO Smart Network
23. VAIO Update
24. Protector Suite
 
Cette liste vient de ce sujet sur Notebookreview, via Sony VPC-Z11 - Frequently Asked Questions
 
En réalisant les installation dans cet ordre, le Vaio fonctionne à merveille (y compris le capteur de luminausité et les touches de fonction)

You can reinstall windows 7 by using OEM reinstall disk and then use the licence to reactivte it. OA means OEM Activation -- meaning they've activated it, So you may need to reactivte windows via the Automatic Phone Activation System after installing. For your convenience, I have included the detailed steps below:  
 
Step 1: How to retrieve the Installation ID  
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1. Log on Windows 7 as an administrator. Click Start, type "SLUI.EXE 4" (without the quotation marks) in the search box, and press “Enter”.  
 
Note: There is a space between "SLUI.EXE" and "4".  
 
2. Select the nearest location, and click "Next".  
3. Please click "Continue" when the User Account Control dialog-box appears.  
 
4. The Windows Activation will generate a toll-free phone number, 1-866-740-1256 for US, 1-866-740-1256 for Canada. The installation ID will be displayed in the following format:  
 
xxxxxx – xxxxxx – xxxxxx – xxxxxx – xxxxxx – xxxxxx – xxxxxx – xxxxxx – xxxxxx  
 
5. Please write down the phone number and the installation ID.  
 
Microsoft Product Activation system will then generate a confirmation ID and activate Window Vista on your computer. For your convenience, I have included the detailed steps below:  
 
Step 2: Calling the Activation Center  
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Note: Microsoft Product Activation is completely anonymous; therefore, no personal information is collected. The entire activation process will take about 5 minutes. Your patience is appreciated.  
 
Please listen carefully to the Interactive Voice System's instructions:  
1. Select Vista.  
2. Please enter the installation ID when prompted.  
3. Please note the confirmation ID for further use.  
 
Step 3: Activate Windows Vista using the confirmation ID  
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1. Please enter the confirmation ID in the Windows Activation box and press "Next".  
2. Please follow the onscreen steps to complete the system activation process.  
 
Your Windows 7 Activation is now complete.