After Windows 7 clean install video drivers will not install and say hardware that worked a mere few days ago no longer exist. [Solved]

After Windows 7 clean install video drivers will not install and say hardware that worked a mere few days ago no longer exist.

When I first received Windows 7 in the mail a couple weeks ago I decided to do an upgrade from Vista rather than a clean install.  At first it seemed fine, but then I noticed windows were crashing left, right and center and my computer was freezing at random
occasions and quite often.  So this week I finally caved in and decided to do a clean install and start from scratch.  Backed up my files on an an external hardrive and got down to businiess.

Windows 7 finally installed and I had absoloutely no freezing or issues.  Then I realized Aero, thumbnails and other effects were not working.  I decided to do a Windows rating and for some reason my video card was a 1.0 and diveretd to "Standard VGA Graphics
Adaptor" from my normal 1GB NVIDIA GeForce GTX 260M.  I then tried to install the proper driver downloaded directly from the NVIDIA site only to receive the error "The NVIDIA setup program could not locate any drivers that are compatible with your
current hardware".  I then tried disabling the drivers in the control panel, in the BIOS menu, auto repair though system secuirity in the control panel and every other method from reinstalling Windows 7.  The most frustrating thing was that when I did an upgrade
the driver worked perfectly and I had no problems whatsoever with it despite all the crashing and freezing.  This is a brand new laptop from only a few months ago.

Does anyone have any recomendations? 

Edit:  One of my harddrives are now missing, the computer tried to boot up and said no OS existed, I've had my computer start and go to a black screen where the destop should have been, froze on startup and various other problems.  None of these issues occured
with Vista, let alone the upgraded Windows 7 and now I'm begining to worry just what the clean install did to my computer.

Solutions to the Problem After Windows 7 clean install video drivers will not install and say hardware that worked a mere few days ago no longer exist.

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I did finally get it to work, I first changed my hard drive to ATA setting to allow me to reach my desktop and get the Windows 7 disc to work.  After a new clean install I combined my hard drives via raid and then did another clean install.  After that
I used my Alienware resource disc to reinstall chipset and all missing drivers which suddenly allowed me to install this time around.

I'm not exactly sure why it worked as it did, but now everything works with no freezing and no problems.  Video cards are both working and my rating went back up to 5.9.

Thanks everyone for the help and suggestions none-the-less.

Tweak IE Options

• Open Internet Explorer.
• Go to "Tools > Internet Options > Advanced Tab".
• Uncheck "Enable third-party browser extensions".
• Click "Apply".
  
• Reboot your computer.

Another Safe way to Repair the Problem: After Windows 7 clean install video drivers will not install and say hardware that worked a mere few days ago no longer exist.:

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