Windows aero doesn't work

Hi

Recently i update my graphics card and install a new one Sapphire HD 4670 1gb ddr3 the problem is after installing the driver the aero disabled itself and when i troubleshoot the problem a error message comes windows desktop manager is disabled even i tried the latest driver but nothing help. I update my system drivers like bios,chipset,sound and others but nothing seems to work. I am using Windows 7 ultimate x32bit I really wanted to use this card under win7 but because of this problem i couldn't.

You can start the desktop windows management by going to Start>Run>services.msc
Locate the Window Manager Session Manager and start the service
Re-enable Aero
If it is disabled, set it to start automatically

I have already done that plenty of time

Windows Install Ati radeon hd 4600 series drivers itself. But the problem is. It doesn't work

yes

dude i have already installed the drivers from the official site. I just want to tell you that when i install other driver. Like manually install the driver from device manager and choose update my driver and have choose from the list and select the asus eah4670 driver version 8/8/2008 it's work but the problem is i cannot play to the latest game i mean game performance are really annoying infact we cannot choose other company driver for our device(The card manufacturer is Sapphire but why it accept other driver)