Dell Precision R5500 Owner's Manual page 71

Memory double word logic failure at address, read value
expecting value
Description A memory module may be faulty or improperly seated. Reinstall the memory modules and, if necessary, replace
them.
Memory odd/even logic failure at address, read value
expecting value
Description A memory module may be faulty or improperly seated. Reinstall the memory modules and, if necessary, replace
them
Memory write/read failure at address, read value
expecting value
Description A memory module may be faulty or improperly seated. Reinstall the memory modules and, if necessary, replace
them.
Memory size in CMOS invalid
Description The amount of memory recorded in the computer configuration information does not match the memory installed
in the computer.
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.
Troubleshooting 71