Appendix B: POST Messages
Appendix
B
POST Messages
The following table lists the Power On Self Test (POST) messages, possible causes and solutions.
Message | Possible Cause | Solution | |
|
|
| |
DISKETTE DRIVE A | Drive A failed or is | Check Setup and cable | |
FAILURE | missing. | connections. | |
| |||
|
|
| |
DISKETTE DRIVE B | Drive B failed or is | Check Setup and cable | |
FAILURE | |||
missing. | connections. | ||
| |||
|
|
| |
EXTENDED RAM | Extended memory not | Replace defective | |
FAILED AT | working or configured | memory. | |
OFFSET: nnnn | |||
properly. |
| ||
|
| ||
|
|
| |
FAILING BITS: nnnn | Memory failure in | Replace defective | |
| |||
| System, Extended, or | memory. | |
| Shadow memory. |
| |
|
|
| |
FIXED DISK X | The hard disk is not | Rerun SETUP and check | |
FAILURE (where X | configured or working | connections, or replace | |
=0 or 1) | properly. | hard disk. | |
|
|
| |
FIXED DISK | The controller card has | Check configuration and | |
CONTROLLER | failed. | connections, or replace | |
FAILURE |
| controller card. | |
|
|
| |
INCORRECT DRIVE | Floppy drive A: not set | Run Setup. | |
A TYPE | |||
correctly in Setup. |
| ||
|
|
| |
INCORRECT DRIVE | Floppy drive A: not set | Run Setup. | |
B TYPE | |||
correctly in Setup. |
| ||
|
| ||
|
|
| |
INVALID NVRAM | NVRAM chip is bad. | Requires repair of system | |
MEDIA TYPE | |||
| board. | ||
|
|
| |
KEYBOARD | The keyboard or | Check connections. You | |
ERROR, or | |||
keyboard controller | may have to replace the | ||
KEYBOARD | |||
failed. | keyboard or controller. | ||
CONTROLLER | |||
|
| ||
ERROR |
|
| |
KEYBOARD | A key is jammed or was | Make sure the keys are | |
ERROR nn | held down during boot. | not jammed or dirty. | |
|
|
| |
KEYBOARD | Keyswitch on the front of | Unlock the keyswitch. | |
LOCKED | the case is locked. |
| |
|
|
|
59 |
