Hello Peter,
Thank you for keeping us updated about the issue and providing all the information which has been asked.
If issue still persists I would suggest you to disable security software temporarily then perform clean boot and then try to install the drivers.
Step 1
Disable anti-virus ****
http://windows.microsoft.com/en-US/windows7/Disable-antivirus-software
Note: Antivirus software can help protect your computer against viruses and other security threats. In most cases, you shouldn't disable your antivirus software. If you have to temporarily disable it to install other software, you should re-enable it as soon as you're done. If you're connected to the Internet or a network while your antivirus software is disabled, your computer is vulnerable to attacks.
Step 2
Perform Clean Boot
Putting your system in Clean Boot state helps in identifying if any third party applications or startup items are causing the issue. You need to follow the steps from the article mentioned below to perform a Clean Boot.
How to perform a clean boot in Windows
http://support.microsoft.com/kb/929135/en-us
Note: Refer "How to reset the computer to start normally after clean boot troubleshooting" to reset the computer to start as normal after troubleshooting.
Step 3
Try to update drivers.
Update drivers: recommended links
Automatically get recommended drivers and updates for your hardware
You can also try to update the drivers from the manufacturer’s website.
http://www.veho-uk.com/main/downloads.aspx
Additional Information:
You can also refer to the below link:
http://www.veho-uk.com/main/support.aspx
Hope this helps. If issue still persists, get back to us with current status of your computer and result of proposed suggestion, we will be happy to assist you if needed.
Thank you.