Alright, I think I found something that might be a bit relevant.
Blue screen from volsnap.sys during boot-up
It discusses the errors caused (similar to what you mentioned) and their solution using the Virtual Environments like BartPE or even a live Knoppix CD.
All you need to do is copy a fresh volsnap.sys to a USD drive - then boot from a Knoppix live CD or something similar and reokace your existing file with the new one.
This should have you good to go!
Blue screen from volsnap.sys during boot-up
It discusses the errors caused (similar to what you mentioned) and their solution using the Virtual Environments like BartPE or even a live Knoppix CD.
All you need to do is copy a fresh volsnap.sys to a USD drive - then boot from a Knoppix live CD or something similar and reokace your existing file with the new one.
This should have you good to go!