Andy,
At some point here you may feel the need just to take a hammer to the thing so you can feel better -
At that time, and I think Adam will agree with me, the best option is just to replace the hard drive, reinstall the OS and call it a day. As long as your old hard drive will spin up, the information (pictures and such) can be recovered as it can be added as a slave drive (either permanently or temporarily).
It's been my experience over the years that blue screens that can't be handled by a reboot/check disk quickly will, in just a matter of time, need a hard drive replacement anyway. Note also that since Adam or I don't have the computer in front of us - other things can contribute to the cause of blue screens such as bad memory, programs, hardware or even cooling fans not working. So we are being general here and going after the most popular solution.
Hard drive replacement - it's not as daunting as it seems. Adam or I could talk you through it by either PM's or a phone call.
I have to go out and actually do some work today so will leave you in the very capable hands of Adam. I'll check in later tonight.
Ron