I installed an update for Steam and my computer crashed, since then I'm unable to restart outside of Safe-Mode. Trying to start normally gets me to the Windows logo screen but then the system restarts before I see the desktop.
I have no system restore points because I did a disk-cleanup a couple of weeks ago (and Microsoft didn't think I'd need even one of those restore files.)
I think the timing with the Steam update is quite coincidental since Steam runs fine from Safe Mode.
Just to confuse matters further (and probably get me zero help as a result) - I'm running Windows 7 through Bootcamp on a Mac (though I don't think it's a hardware issue since OSX still loads fine)
How would I diagnose what's causing the crash (and fix it)?