91 - Troubleshooting
*Incorrect Drive B type – run SETUP
Type of floppy drive B: not correctly identified in Setup. This means that the floppy disk drive type
identified in your setup utility does not agree with the type detected by the Power On Self Test. Run the
setup utility to correct the inconsistency.
*Invalid NVRAM Data
Problem with NVRAM access. In the unlikely case that you see this message you may have some
display problems. You can continue operating but should contact your support representative for more
information.
*Keyboard controller error
The keyboard controller test failed. You may have to replace your keyboard or keyboard controller but
may be able to use an external keyboard until then. Contact your support representative.
*Keyboard error
Keyboard not working. You may have to replace your keyboard or keyboard controller but may be able
to use an external keyboard until then. Contact your support representative.
*Stuck Key
BIOS discovered a stuck key and displays the scan code for the stuck key. You may have to replace your
keyboard but may be able to use an external keyboard until then. Contact your support representative.
*Monitor type does not match CMOS – Run SETUP
Monitor type not correctly identified in Setup. This error probably means your BIOS is corrupted, run
the setup utility and set all settings to the default conditions. If you still get this error, contact your
support representative.
*Operating system not found
Operating system cannot be located on either drive A: or drive C: Enter the setup utility and see if both
the fixed disk, and drive A: are properly identified and that the boot sequence is set correctly. Unless
you have changed your installation greatly, the operating system should be on drive C:. If the setup
utility is correctly set, your hard drive may be corrupted.
