Windows 7 Bitdefender "Cleans" Windows 7 SAM file. Now Windows won't boot. BSOD even on safe mode.

Hi,
If you have a Windows 7 install disk then change your boot order so that the machine will boot from the install disk. Boot off the disk but instead of installing hit the repair key instead.
If you don't have a install disk you download a copy here simply for this purpose. (Do remember though that to actually install it on a system you'll also need an activation key. )
http://www.w7forums.com/threads/official-windows-7-sp1-iso-image-downloads.12325/

I moved your post over to the bsod section and if the bsod's continue once you get access to windows read this thread on what to do and how to send the dump files in:
Link Removed

Dump files are found in a folder marked Minidump which is in the main windows folder. If you can't find it then you might need to set up your machine to produce them:
Go to Start and type in sysdm.cpl and press Enter
Click on the Advanced tab
Click on the Startup and Recovery Settings button
Ensure that Automatically restart is unchecked
Under the Write Debugging Information header select Small memory dump (256 kB) in the dropdown box
Ensure that the Small Dump Directory is listed as %systemroot%\Minidump << where your .dmp files can be
found later.
Click and apply to exit the dialogs.