I didn't get to quite read the entire thing because the the bottom it it said "dumping physical memory to disk" [or something like that] 5% - so I was like no, then held the power button on my computer to shut it down quickly. But what I did read was it saying something about "If this is the first time you've seen this message, restart your computer - if this screen persists, disconnect any newly installed hardware - disable disk caching etc etc". The only two things that were newly installed was another hard drive [which I disconnected a few weeks ago], and a memory card reader [which I don't see that causing my OS to fail]. Anybody have any idea what this screen is? And what this screen tells me about my computer.