Hmm...that definitely sounds like a bad predicament for you there floofy. I know I am okay with computers, but I have never heard of a computer doing that unless it is on it's final days.
Computers that are old, and have been around for a very long while tend to do weird and crazy things like that. I know what I am saying is most likely not very helpful to you, and I do hope someone else who knows more comes along to this thread to help you out better. In my opinion though I believe your computer may being on it's final moments.
If anything I suggest you take it to a computer technician to get a better analysis on your issues.