Dell OPTIPLEX 990 Service Manual download pdf (Page 83)

Memory tests terminated by keystroke

Description A keystroke interrupted the memory test.

No boot device available

Description The computer cannot find the floppy disk or hard drive.

No boot sector on hard-disk drive

Description The computer configuration information in System Setup may be

incorrect.

No timer tick interrupt

Description A chip on the system board might be malfunctioning.

Non-system disk or disk error

Description The floppy disk in drive A does not have a bootable operating system

installed on it. Either replace the floppy disk with one that has a bootable

operating system, or remove the floppy disk from drive A and restart the

computer.

Not a boot diskette

Description The operating system is trying to boot to a floppy disk that does not have a

bootable operating system installed on it. Insert a bootable floppy disk.

Plug and play configuration error

Description The computer encountered a problem while trying to configure one or

more cards.

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Dell OPTIPLEX 990 Service Manual Page 83