Dell OptiPlex 7040-Small Form Factor Owner's Manual page 35

Table 4. System error messages (continued)
System message
CPU fan failure
System fan failure
Hard-disk drive failure
Keyboard failure
No boot device available
No timer tick interrupt
NOTICE - Hard Drive SELF MONITORING SYSTEM
has reported that a parameter has exceeded
its normal operating range. Dell recommends
that you back up your data regularly. A
parameter out of range may or may not
indicate a potential hard drive problem
Description
CPU fan has failed.
System fan has failed.
Possible hard disk drive failure during POST.
Keyboard failure or loose cable. If reseating the cable does not
solve the problem, replace the keyboard.
No bootable partition on hard disk drive, the hard disk drive
cable is loose, or no bootable device exists.
● If the hard drive is your boot device, ensure that the
cables are connected and that the drive is installed
properly and partitioned as a boot device.
● Enter system setup and ensure that the boot sequence
information is correct.
A chip on the system board might be malfunctioning or
motherboard failure.
S.M.A.R.T error, possible hard disk drive failure.
Troubleshooting your computer 35