Microsoft XP suddenly craping out.

Seriously, XP has been working find for the past 4 years and all of a sudden it's getting slow and restarting for no reason. I have no viruses or anything like that. Do you think it's a marketing ploy to buy Vista?

>>1
If nothing works... How long have you had the harddrive the XP is on. They have a shelf life of 5-10 years, and after that it's random errors, crashes at boot.
>>4
I don't even think a modern 12-year-yold would even undrestand if you told him of DOS, it was this generation who thought <pre>format c:</pre> was cool.