Vaio Z21WN + DisplayLink (Samsung LD220)

I have just purchased a Samsung LD220 22" screen to connect to my current setup which was laptop screen + Samsung 26" conneted via HDMI. As i found out that i could not use both VGA and HDMI at the same time for 2 external monitors i purchased the Samsung LD220 which connect via the USB port. Everything is working perfect - there is only one glitch which is that the driver for DisplayLink (the system Samsung is using for the USB interface) is disabling my Aero interface on Windows 7.

It seems to be a combi of my local drivers for my gfx cards (should be the newest nvidia drivers x64) and the newsest displaylink drivers also x64. I have tried on a couple of other machines i have and it works WITH aero here.

So i was thinking that maybe someone on this forum would have an idea what i could do to get my Aero interface back? (I have tried to force my Aero back via reg tweaks, but without luck)

 

For info i have just tried uninstalling the nvidia driver completly so the device manager now just says "Standard VGA Graphics adapter". The result is that the Samsung LD220 now works WITH aero support, but my HDMI output no longer works :-(

FYI i have using the following guide when installing my W7: http://forum.notebookreview.com/showthread.php?t=431357

 

Have now installed another nVidia driver but with the same result. I have tried the following 2 drivers;

8.16.11.8735 ( http://esupport.sony.com/US/perl/swu-download.pl?mdl=VGNZ890G&upd_id=5151&os_id=47)

8.15.11.8684 ( http://esupport.sony.com/US/perl/swu-download.pl?mdl=VGNZ790D&upd_id=5394&os_id=47)

I currently have the last one installed (the first one was the one i installed after W7 install), but as mentioned i still have no aero support ;-(

 

The event viewer has the following entries;

"The Desktop Window Manager was unable to start because WDDM is not in use"
"The Desktop Window Manager has exited with code (0xc00002fe)"

Restarting the "Desktop window manager session manager" does nothing to solve the problem but put the above 2 entries in the log again.

 

Nobody with an idea?