Lenovo ThinkPad T21 English - 46L4325 - ThinkPad T20, T21User's Reference guid - Page 47

Hard-disk-drive problems

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Hardware troubleshooting Problem The battery pack cannot be charged. Cause and action You cannot charge the battery when it is too hot. If the battery feels hot, remove it from the computer and allow it to cool to room temperature. After it cools, reinstall it and recharge the battery. If it still cannot be charged, have it serviced. Hard-disk-drive problems Problem The hard-disk drive makes a rattling noise intermittently. The hard-disk drive does not work. Cause and action The rattling noise might be heard when: The hard-disk drive starts accessing the data or when it stops. You carry the hard-disk drive. You carry your computer. This is a normal characteristic of a hard-disk drive and is not a defect. In the Startup menu in the IBM BIOS Setup Utility, make sure that there is no exclamation point ! to the left of the hard-disk drive. If there is such a mark, the hard-disk drive is disabled. Clear the mark to enable the drive. Chapter 3. Solving computer problems 31

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Hardware troubleshooting
Problem
Cause and action
The battery pack cannot
be charged.
You cannot charge the battery when it is too hot. If the battery feels hot,
remove it from the computer and allow it to cool to room temperature.
After it cools, reinstall it and recharge the battery. If it still cannot be
charged, have it serviced.
Hard-disk-drive problems
Problem
Cause and action
The hard-disk drive makes
a rattling noise
intermittently.
The rattling noise might be heard when:
±
The hard-disk drive starts accessing the data or when it stops.
±
You carry the hard-disk drive.
±
You carry your computer.
This is a normal characteristic of a hard-disk drive and is not a defect.
The hard-disk drive does
not work.
In the Startup menu in the IBM BIOS Setup Utility, make sure that there is
no exclamation point ! to the left of the hard-disk drive.
If there is such a
mark, the hard-disk drive is disabled.
Clear the mark to enable the drive.
Chapter 3.
Solving computer problems
31