HP Z240 Maintenance And Service Manual page 78

Problem
Non-system disk or NTLDR missing
message
Workstation will not start.
68 Chapter 4 Diagnostics and troubleshooting
Cause
The system might not have
automatically recognized a
newly installed device.
Drive responds slowly
immediately after power-up.
System is trying to start from
nonbootable media.
System is trying to start from a
damaged hard drive.
System files missing or not
properly installed.
Hard drive boot disabled in
Computer Setup.
Hard drive is damaged.
Solution
1. Run Computer Setup (F10) Utility.
2. If the system does not recognize the new device, verify
that the device is listed in Computer Setup (F10) Utility.
If it is listed, the probable cause is a driver problem. If it
is not listed, the probable cause is a hardware problem.
3. If this drive is newly installed, enter Setup and try
adding a POST delay under Advanced > Boot Options.
Run Computer Setup (F10) Utility and increase the POST Delay
in Advanced.> Boot Options
Remove the optical disc or USB drive.
1. Insert a bootable system optical disc or USB drive and
restart the computer.
2. If the hard drive is still inaccessible and MBR Security is
enabled, try restoring the previously saved MBR image
by entering Setup and selecting Security > Save/
Restore MBR of the system hard drive.
1. Insert a bootable system optical disc or USB drive and
restart.
2. Verify that the hard drive is partitioned and formatted.
3. Install the system files for the appropriate operating
system, if necessary.
Run Computer Setup (F10) Utility and enable the hard drive
entry in the Advanced > Boot Options list.
Replace the hard drive.