A bad sign

This is not good. When I turned on my computer this morning, I got the same error message. I thought everything would be fixed by reinstalling the system, but apparently not. I restarted again, and now it is working okay, but I don't think I've seen the end of this problem. I have a bad feeling.....

I've been trying to be optimistic about it, but I think at this point I'm just in denial.