Character frozen, system information refuses to start, drive will not read

I am very irritated right now. I had an game error where my character was stuck in a default animation pose during a GATE event and I could not log back in as it would give me an "unexpected error (45d)".

I submitted a ticket, and it asked me to run the system information application upon which Windows gave me an error that said it wasn't a valid application. I ran it twice to make sure and get a screenshot, then Windows explorer froze and had to be shut down. I restarted and then the drive on which I had FFXIV installed was not listed. I restarted again, and now Windows refuses to start at all.

I'm not sure how this application managed to completely cripple my computer, however I am going to be very angry if there was any permanent damage done. One drive had close to 600 GB of data, another 400 GB. Right now I'm currently just trying to get my computer to run, however I didn't expect this all to start with some small game error and I am just hoping my drives are not permanently damaged.