Hello Nicknack & Ulli,
The graphics controller on this processor is one of the newest ones Intel ® released (Ivy Bridge) and due to this, I am afraid to say that there are no drivers for Windows Vista for it.
Windows 7 drivers sometimes work on Windows Vista. I recommend you trying the Windows 7 driver that can be downloaded at the following link:
If the driver does not work properly I recommend you contacting the motherboard system manufacturer to get their drivers.