Unfortunate that you haven't had any luck. You are using the Windows 7 RC, and not the Beta, correct? If you are using the beta, switch to the RC post-haste. You can get your license and key over here from Microsoft off of TechNet: *** URL removed ***
Beyond that, I'm not sure what happened. Did you write down what the stop code was when you saw the BSOD? Usually if you get that, then you can see what happened. My guess is something weird happened with one of the drivers that activates upon boot, but that is just a guess. If you have any of the error codes or could get in via the recovery console from the Windows 7 RC install DVD then you could likely fix it, or at least have the information to present to others. As far as for what Marco suggested, there is the official Windows 7 RC Support Forum located here *** URL removed *** . It is supported by product specialists as well as engineers and support teams. You may want to post your question there. Given the right information they can usually point out a fix pretty quick.

Staff note: if you want to provide URL's to the official Technet pages, then please use a direct link and not some redirect of which we have no clue where it will lead. For security reasons URL's removed.