My computer has a Pentium II MMX 350 MHZ Processor. I know this because it is the first thing it says on the screen when I boot it up. This morning however, when I turned it on, it said Pentium II-175 MHZ. I shut down and rebooted and it was back to normal. What could have caused this? Is it a warning sign that my processor is about to die? The computer will be 5 years old this August.