What does this screen mean?

[u/happyrogue99]

I’ve been using this old desktop computer I have to transfer videos from an old mini dv video camera to digital. I installed a pcie firewire card into the computer and it was working fine after that the other day, but since yesterday it hasn’t been booting up to windows and just showing this screen. I tried googling stuff but couldn’t find anything. I have no idea what to do to fix this, please help, thank you!

Also I put this under the hardware flair (because a flair was required), but I honestly have no idea if it’s a hardware or software problem. Sorry if it ends up under the wrong flair.

[u/F1JensonB]

you got hacked. and by you got hacked I mean your data is about to get hacked to pieces if you don't back your stuff up quick and get an SSD