Memory Tests Terminated By Keystroke; No Boot Device Available; No Boot Sector On Hard-Disk Drive; No Timer Tick Interrupt - Dell OptiPlex 990 Desktop Service Manual

Memory tests terminated by keystroke

Description

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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A keystroke interrupted the memory test.