UPGRADING REPAIRING PCs
UPGRADING REPAIRING PCs
UPGRADING REPAIRING PCs
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that sounds normal. Before deciding a hard disk is defective, test it<br />
on another known-working system. If the problem goes away on<br />
another system, the drive is not the problem (see Table 4.28).<br />
Note<br />
Chapter 4—SCSI and IDE Hard Drives and Optical Drives<br />
Before using this table, verify that your drive’s BIOS configuration<br />
is correct. If your system’s LBA or other drive translation settings<br />
are disabled and your drive needs them, it will appear to<br />
hang.<br />
Table 4.28 Hard and Soft Problems and Solutions<br />
Symptom Cause Solution<br />
Drive makes banging Stiction (Static friction) If drive hangs, try tapping<br />
noise on initial power is causing the heads gently on one corner to<br />
up; can’t boot without to stick to the media free the heads or mount<br />
restarting the computer because of an aging the drive upside down.<br />
a couple of times; mechanism and Back up data and replace<br />
usually found on very lubrication problems drive as soon as possible.<br />
old (under 100MB) RLL<br />
or MFM hard disks only;<br />
these drives use two<br />
(20-pin and 34-pin)<br />
data and signal cables.<br />
internally.<br />
Drive makes scratching Severe head damage, Replace drive.<br />
or “boinging” noise probably caused by<br />
internally; won’t boot. impact (fall or drop).<br />
Drive spins normally If cable and jumpering Replace logic board or<br />
but can’t be recognized. okay, probably failed<br />
logic board.<br />
replace drive.<br />
Drive has repetitive If system rebooted or Remind user to shut down<br />
errors detected by was turned off without computer normally.<br />
SCANDISK or other proper shutdown, these<br />
disk testing utility. are temporary files that<br />
weren’t closed. This does<br />
not indicate a hardware<br />
problem.<br />
If normal shutdown If normal shutdown<br />
procedure followed, procedure was followed,<br />
might indicate get manufacturer utility<br />
marginal disk to detect and remap<br />
surface. sectors and retest drive<br />
frequently. If drive doesn’t<br />
improve, replace as soon<br />
as possible.<br />
If replacing the logic assembly does not solve the problem, contact<br />
the manufacturer or a specialized repair shop that has clean-room<br />
facilities for hard disk repair.
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