Oh god, I'm so scared right now.
I recently installed a texture pack called TileCraft and noticed how awesome everything looked. I went upstairs from my underground bedroom only 30 seconds in the game, and then my computer monitor started flashing on and off. This happened maybe about 20 times before I was able to hit escape and exit to the main menu. It flashed twice more before it started acting normal at the main menu.
I went to close Minecraft only to find that the caption bar that had the X button, minimize button and maximize button, and that it was gone. It was just a captionless frame on screen, no way to close it but to use force quit.
I then went to the forums to write this, but the first attempt I had, I couldn't type anything. I clicked in the text window countless times, but no success. I wanted to restart so I went to close Chrome, but the X button wasn't working. It was there, it just did nothing when I clicked. The chrome browser also was whited out as if I hadn't selected it.
I couldn't continue at the moment, so I went to use the bathroom, then came back to restart it so that I could write this.
Wtf is going on!?