AERO problems on Dell Inspiron 1720 w/8400m GS

A few days ago someone posted as follows - - I'm having the exact same problem. Going back to old drivers isn't an option as they aren't stable. Anyone?

Hey all, I'm new to the forums here but I was hoping I could get some help on working out a problem with Windows 7 (W7) Aero and the GeForce 8400M in my Dell Inspiron 1720.

From the get-go W7 doesn't use Aero, it's stuck with the basic display. It also won't allow the color depth to be set to anything other than 16-bit. When running the troubleshooting wizard for Aero and transparency effects I get the following problems that it wasn't able to fix:
•Desktop Window Manager is disabled
•Color depth is set too low

I've also attempted the "hack" here, but it didn't make a difference.

I've installed both W7x64 and W7x86, testing both the latest Vista drivers from Nvidia for the 8400M as well as the beta drivers available from Windows Update. Neither seems to make a difference.

It seems that this is just a problem with the GeForce 8400M since I've noticed other 1720 users fortunate enough to have the 8600M experience Aero in W7 just fine.

I would greatly appreciate any advise or ideas on this one. Maybe there's just something I don't know about drivers for the 8400M and/or Windows 7.

Thanks.

 

did you find a solution to your problem? With Windows 7 installed on my inspiron 1720 / nvidia 8600M card, any transparent image has white dots all over the transparent section.


Help!