HP ProBook 630 Maintenance and Service Guide - Page 83

Table 7-15, Items, Procedures, Quick check, Verify display

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Table 7-15 Issues, possible causes, and fixes (continued) Items Procedures ● No video (black or blank image) but have power ● Light activity ● No error messages ● Fan noise Failed critical components (memory, hard drive, system board) Loose connection Recently added hardware NOTE: These suggestions assume that the computer has not previously been set up for multiple displays. ● Hard drive light blinking and hard drive noise Troubleshooting steps Quick check 1. Verify that system light activity is OK. 2. Remove all external devices, including docking station. Recently added hardware or applications may cause graphics driver conflict and result in loss of video. 3. Perform hardware reset (8. Hard reset on page 58) and verify that HP Logo is presented correctly on display screen when pressing f10. 4. Test with external monitor via VGA port (or DisplayPort, HDMI, or other). Press power button and close the computer lid to force video output to external video. If unsuccessful, contact HP service. 5. If external video is OK, update BIOS, software, and drivers (4. Update BIOS and drivers on page 52), and perform soft reset (9. Soft reset (Default Settings) on page 59) if needed. Go to next step to verify display. Verify display ● When booting to Windows, determine whether image appears on display screen (via Windows Screen Solutions or Windows logo + p for display switcher). ● If there is video on the display, disconnect external display device, open the computer lid, and restart. The following steps are for authorized providers or technicians. 1. Reseat display cable connection on system board. 2. Reseat display cable connection on display panel side. 3. Examine and reseat major components, such as hard drive and memory. 4. Test with minimum configuration (11. Test with minimum configuration on page 60) by removing hard drive to isolate operating system issues and testing video in F10 Setup. 5. If video is present, restart and retest the computer. 6. If video is present but bad, go to Display on page 79 section. 7. If issue persists (no video), test with external video. 8. If issue persists, test or replace a confirmed working display. 9. If issue persists, replace discrete graphics card. 10. If issue persists, replace system board because of defective video function. Tips Swipe a metal piece (screwdriver) over wireless or mute buttons to act as if closing lid to force video output to external display device. Common issues and possible solutions 71

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Table 7-15
Issues, possible causes, and fixes (continued)
Items
Procedures
●
No video (black or blank image)
but have power
●
Light activity
●
No error messages
●
Fan noise
●
Hard drive light blinking and hard
drive noise
Failed critical components (memory, hard drive, system board)
Loose connection
Recently added hardware
NOTE:
These suggestions assume that the computer has not previously been set up for
multiple displays.
Troubleshooting steps
Quick check
1.
Verify that system light activity is OK.
2.
Remove all external devices, including docking station. Recently added hardware or
applications may cause graphics driver conflict and result in loss of video.
3.
Perform hardware reset (
8. Hard reset
on page
58
) and verify that HP Logo is presented
correctly on display screen when pressing
f10
.
4.
Test with external monitor via VGA port (or DisplayPort, HDMI, or other). Press power
button and close the computer lid to force video output to external video. If
unsuccessful, contact HP service.
5.
If external video is OK, update BIOS, software, and drivers (
4. Update BIOS and drivers
on page
52
), and perform soft reset (
9. Soft reset (Default Settings)
on page
59
) if
needed. Go to next step to verify display.
Verify display
●
When booting to Windows, determine whether image appears on display screen (via
Windows Screen Solutions or
Windows logo
+
p
for display switcher).
●
If there is video on the display, disconnect external display device, open the computer
lid, and restart.
The following steps are for authorized providers or technicians.
1.
Reseat display cable connection on system board.
2.
Reseat display cable connection on display panel side.
3.
Examine and reseat major components, such as hard drive and memory.
4.
Test with minimum configuration (
11. Test with minimum
configuration
on page
60
) by
removing hard drive to isolate operating system issues and testing video in F10 Setup.
5.
If video is present, restart and retest the computer.
6.
If video is present but bad, go to
Display
on page
79
section.
7.
If issue persists (no video), test with external video.
8.
If issue persists, test or replace a confirmed working display.
9.
If issue persists, replace discrete graphics card.
10.
If issue persists, replace system board because of defective video function.
Tips
Swipe a metal piece (screwdriver) over wireless or mute buttons to act as if closing lid to
force video output to external display device.
Common issues and possible solutions
71