Unnecesarily damaging the RAM or CPU or something else by putting it under more stress than it will ever see in it's intended use. Overclocking is known to shorten the useful life of parts. Extended stress testing won't improve the situation. I would try the suggestions others made, but do a more relaxed stability test and see how that works. Your computer didn't crash during P95 24+ but it seems to be crashing now. The 2 things could be related.