Solving Display Problems - HP Z228 Maintenance And Service Manual

Problem
Non-system disk or NTLDR missing
message
Workstation will not start.

Solving display problems

These suggestions apply to monitors connected to desktop and tower configurations, and to external
monitors connected to all-in-one configurations.
Problem
Blank screen (no video).
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.
Cause
The cable connections are not
correct.
The monitor is off.
Screen blanking utility installed
or energy saver features
enabled.
System ROM is bad; system is
running in FailSafe Boot Block
mode (indicated by 8 beeps).
Fixed-sync monitor does not
sync at the resolution specified.
Computer is in Hibernate mode.
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 > Power-On.
Run Computer Setup (f10) Utility and increase the POST Delay
in Advanced.> Power-On 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 > Restore
Master Boot Record.
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 Storage > Boot Order list.
Replace the hard drive.
Solution
Verify the cable connections from the monitor to the
computer and to a working electrical outlet.
Turn the monitor on (LED is on). You might need to refer to
the monitor manual for an explanation of LED signals.
Press a key or the mouse button and, if set, enter your
password.
Reflash the ROM using a SoftPaq.
Verify that the monitor can accept the same horizontal scan
rate as the resolution specified.
Press the power button to resume from Hibernate mode.
Troubleshooting scenarios and solutions 59