Boot Camp - Black Screen after installing Windows 7

Hello guys!
I have tried to install Windows 7 several times and so far no success.
Everything goes fine until I complete Win7 installation.
Then when I install Boot camp drivers the computer prompts for reboot.
After the login screen, I am able to log in, but the screen turns into BLACK!.
And I cannot do anything but shut it down with the power button. I can still hear that the laptop is on, but screen stays black.
I have tried removing the ATI and NVIDIA Drivers as recommended in this forum:
http://forums.macrumors.com/showthread.php?t=840528
But so far I get the same result over an over.
Anybody is facing the same issue?
I have MACBOOK PRO
MAC OS X 10.6.8
AMD Radeon HD 6490M (ATI)
Intel HD Graphics 3000
Quad Core i7 Chip, 4GB RAM 500GB HD
Please Help!!

I did install : Display Driver +  Catalyst Control Center dowloaded from AMD support website:
http://support.amd.com/us/gpudownload/Pages/bootcamp-win7.aspx
The result is still the same - BLACK SCREEN
I rolled back to initial configuration.
Then I installed the AMD driver.
In device manager it shows as the AMD  Radeon HD 6490M driver for the display/Graphics card
Everythig is fine until I install the Boot camp drivers.
Then after the reboot I face the same issue.
However the driver for AMD still stays there in the devive manager.
Any other ideas, suggestions?
thanks!!

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