Laptop don't boot 564

'Protagonist' You worry too much! So far, all the advice you gave me, is like from a 5 year. Why do you think my HD is failing? Julius

Hey, you asked the question. Now you make fun of the suggestions you get. It's your data to lose ... have at it.

Now to give you an answer to 'Why do you thing my HD is failing?'

Because of the symptoms you describe. Hard drives have data error detection and correction function. When a errors are detected when reading data, the data is reread multiple times to try to get valid data. If this reread process is happening often, the exact symptoms you describe occur. Once the deteriorate in performance begins, it gets worse until finally the drive will not function at all. The proximate cause can either be deterioate of the magnetic recording surface or malfunctions of mechanical parts (head positioner solenoid, bearings, platter motor.) IT is only to be expected that a certain percentage of hard drive fail early in their designed lifespan. MTBF means exactly that, MEAN time before failure. The bulk of drives can be expected to fail very near MTBF, but some will have lifetimes on either tail of the curve. What you have is multiple disks spinning at 7200 rpm with a read head skimming only a few microns above a delicate recording surface, and that head is also rapidly across the disk when moving from track to track. A failure mode could be that there is momentary contact between the head and the recording surface. That location will have the oxide destroyed, and likely tiny bits of recording surface will break off and rattle around in the rotating disk container. Progressive deterioration begins, reads and writes take longer and longer, and more and more data is completely lost.

You've gotten half a dozen good replies to your post, all of which tell you about the same thing. I'd guess that for the six who replied, the combined total of experience with computers is a hundred years or more - for me alone it's over forty years.

Please post the result of your experiment.

Phil Weldon

Phil Weldon "page that. possible, directly disk TravelStar corrected repair do with HP and original original disk TravelStar corrected "page that. You worry too much! So far, all the advice you gave me, is like from a 5 year. Why do you think my HD is failing? Julius