Is my computer stable?

-I have a pentium mmx computer with the processor running at a stock frequency of 500mhz. I overclocked the processor to 2ghz and installed windows vista. it works, but is a bit slow. im using liquid cooling to keep the core temperature to 50 degrees Celsius. how stable do you think my computer is?You've got the best response from geek-in-training, mate. I wouldn't bother waiting for any more sensible responses.
I agree wholeheartedly with previous answers. But if you keep it in the stable you will need to clean it more often.

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i'm sorry but the fact that you're trying to run vista says it all. i would try ubuntu and see how it runs