The last three times this happened, the computer forced a restart. This latest time, a few minutes ago, it seemed to reload everything back to normal a few moments after the issue occurred. No error report, no "Display driver stopped working and recovered" message.
At this point I'm considering replacing the computer, but it's only about two years old. Is it more likely that this is just a processor or video card issue? I'd prefer to replace parts rather than purchase an entirely new PC if possible.
If any extra information about my PC is required, just let me know how to find it for you. Thanks.