yesterday I was trying to update Ubuntu 12.04 (64bit version dual-booted with Win 8.1 64bit) to 13.04, and something happened that has now caused me to not be able to boot into Ubuntu at all. Only windows works now. Went into the Update manager had selected the option to have it inform me of all updates including non-LTS versions, and that finally got it to work.....or at least it looked as if it was going to work, but it failed (this being the 2nd time it did that, tried updating via command line at first before trying it this way)
I have no idea what happened tho. It was going fine, and I got up to get something to drink, prolly took like 5min, came back, and my Laptop was off, and now it won't boot in Ubuntu. tried going into recovery and having it check the filesystem, and "repair broken packages" to no avail. They both finish, then once it tries to boot into Ubuntu, I just get a black screen and it stays like that until i hard-reset.
I've been trying to figure this out since yesterday morning, and am about to just delete it and start fresh, luckily everything was already backed-up, but Figured I would ask here and see if anyone had any other ideas before I wipe it and start over.