![](http://pdfasset.owneriq.net/9/5b/95b43fe7-f6dd-4f92-8c3e-85e1d63bd041/95b43fe7-f6dd-4f92-8c3e-85e1d63bd041-bg68.png)
Hard Disk Controller and Hard Disk Check
The computer next checks the hard disk controller and
drive unit. If a malfunction is found in the hard disk con-
troller, you see one of these error messages:
1701-A
1701-B
1701-E
If an error is found in the hard disk drive unit, one of
these error messages is displayed:
1701-C
1701-D
C-4
Power-on Diagnostics