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2100: HDD0 Hard disk drive initialization error (1) & Thinkpad can't boot up

Last Modified: 2012-05-12

Refer to attached.

Occasionally (about 20-30% of the times) when I tried to boot up my laptop,
it will give the attached screen error within 3-5 seconds after powering
up my X61

Usually I would power it off & power on & it would be able to boot up
on Win XP Professional SP3 again.

What's the cause?

Is this is a hardware or software issue?

Other than reinstall the entire OS (which I wanted to avoid as I don't want all
my apps to be gone as I think reinstall will require the apps to be reinstalled?),
what else can I do to remedy this?
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