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The power adapter failed within a month. And the hard drive failed after about a year and half.It has also developed a strange problem: sometimes it runs very slow when on AC power and as soon as the AC power adapter is unplugged it runs fine. It is very repeatable; the cpu usage goes up and down as the power adapter is plugged and unplugged. There are discussions on the web by other HP notebook PC users with similar experience. The cause appears to be the power low condition from the adapter is incorrectly detected by the PC and the PC reduces the clock rate to save power. It corroborates with the fact that the CPU clock rate stays at 777MHz (instead of 2.6GHz) regardless the power scheme setting when on AC. Other people have corrected the problem by replacing the power adapter.
Given the many problems that I experienced with the HP notebook PC 8510w and also HP PhotoSmart 2575 printer, I don't think I'll buy another HP product.
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the laptop runs like jet plane all the time. The fan noise never stops and much loader than my desktop sitting of the floor.I would consider this as a defect product.
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