Just noticed that you're using a C300. There have been documented issues of system hiccups with this SSD - everything randomly locks up for ~45 seconds out of the blue before returning to normal. After experiencing a couple of these after installing Windows on my brand-new C300 I Googled around and found this:http://forum.crucial.com/t5/Solid-State-Drives-SSD/Solution-C300-Disk-Freeze-ups-in-Windows-7-solved-for-me/td-p/38766
You can grab the registry key here (or do it manually):http://www.overclock.net/12912224-post5.html
I just did the fix myself so I can't tell for sure if it's working, but the results from that thread look pretty promising. I guess firmware 0007 was supposed to address the issue, but mine came with 0007 pre-installed and I still had freezes. It's been a couple of hours and so far, so good.
It sounds like you might have some other underlying issues with your setup since you're having boot issues and BSODs, but hopefully that clears up some of the hangups.