When you say "it" locks up, is "it" the OS (which OS are you running) that freezes up, or is "it" the drive that locks up?  If it is the drive, how do you know that "it" is locked up?  I have seen a lot of posts here that Fujitsu drives are bad and should be avoided.  Have you gone into your BIOS to check on the settings related to this drive?  Have you run a Scandisk thorough test to see if there are bad sectors on the drive?  Have you downloaded the Fujitsu utilities from www.fujitsu.com to test the drive? The drive could be failing, but the symptoms indicate some other possibilities.  Can you borrow a working drive with the same OS as you're running to see if the same thing occurs?

>I have a Fujitsu 15gb hard drive which is acting very strangely. At
>first boot up it performs quite well, but after about 15 or 20 minutes
>locks up. When rebooting, the drive is not recognised resulting in HARD
>DISK FAILURE being displayed. After shutting down and waiting about 30
>minutes the drive is again recognised at boot up. Overheating is not
>evident as the drive feels quite cool to the touch and the rest of the
>computer seems OK. This procedure of booting and shutting down can go on
>indefinitely without any change to the drive, and I am at a loss to
>explain it. One would assume the hard drive is finished but it just
>keeps on going. Being only a little over a year old it is very
>disappointing to encounter this behaviour. Any thoughts on this?
>
>


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