My computer recently ceased to boot Windows 7 after I turned it off one day for a reason that I do not understand, and have not resolved yet. But, Ubuntu was working fine, until today...
Before Windows 7 failed for me, I happened to intall a copy of WUBI from inside Windows that was Ubuntu version 12.04, just to kind of learn about it and try some stuff one day. Since the time Windows stopped booting and failed (I tried to do a Windows repair and system restore with the machine itself and install disk, absolutely all of them failed), Ubuntu has still worked fine. No problems. I could browse the web, watch YouTube videos (which is more than I can say of the Windows 7 laptop provided to me by my school >.<) and even run my favorite old video games using WINE. Even Skype worked! Honestly, I was really starting to like that Ubuntu works when Windows does not, and does most of all the same stuff I'd do anyway! But, today, when shutting down my computer, it hung at a really weird error screen that stayed there for several minutes. It filled a page with some kind of Write Errors, gave a lot of numeric addresses for memory, said something about "loop0" and an error with "ETX3-fs", and said it was going to try to remount something -- the hard drive I think? certainly some drive or source of memory -- in read-only mode, to try to accomplish whatever it was trying to do.
Here, I found in my search history based on my search terms what I think the last two lines of error were before the screen stopped responding with anything other than a flashing underscore: EXT3-fs (loop0): error: ext3_journal_start_sb: Detected aborted journal EXT3-fs (loop0): error: remounting filesystem read-only
Anyway, what I was wondering is this: Does anyone who knows more about computer hardware know whether this is a hardware or software issue? I really like this computer, and ultimately would like to fix Windows and keep Ubuntu working, and I'm wondering now if a hardware issue I can't easily fix corrupted Windows and now is starting on Ubuntu, or if this error is some random thing that just happened that means Ubuntu ran into a weird error while shutting down. Also, since that error screen disappeared several minutes after I saw it, the computer has been sitting with its fans/lights running but a black screen.