Blinking Lights - HP Elite x2 G8 Maintenance And Service Manual

Table 7-15 Issues, possible causes, and fixes (continued)
Items
The following steps are for authorized providers or technicians.
Tips

Blinking lights

Use this information to interpret blinking lights on the computer.
Table 7-16 Issues, possible causes, and fixes
Items
Symptoms
Lights blink on keyboard
lock/num lock
92 Chapter 7 Troubleshooting guide
Procedures
2.
3.
4.
5.
Verify display
●
●
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. If issue persists, replace system board because of defective video function.
Swipe a metal piece (screwdriver) over wireless or mute buttons to act as if closing lid to
force video output to external display device.
Procedures
Possible causes
caps Blinking lights on startup usually indicate a problem with basic functionality of a critical
keys component (processor, BIOS, graphics cards, memory, and so on) because of a loose
connection, defective parts, or recently added parts.
Remove all external devices, including docking station. Recently added hardware or
applications may cause graphics driver conflict and result in loss of video.
Perform hardware reset (8. Hard reset on page
correctly on display screen when pressing f10.
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.
If external video is OK, update BIOS, software, and drivers
on page 72), and perform soft reset
needed. Go to next step to verify display.
When booting to Windows, determine whether image appears on display screen (via
Windows Screen Solutions or Windows logo
If there is video on the display, disconnect external display device, open the computer
lid, and restart.
Reseat display cable connection on system board.
Reseat display cable connection on display panel side.
Examine and reseat major components, such as hard drive and memory.
Test with minimum configuration
removing hard drive to isolate operating system issues and testing video in F10 Setup.
If video is present, restart and retest the computer.
If video is present but bad, go to
If issue persists (no video), test with external video.
If issue persists, test or replace a confirmed working display.
If issue persists, replace discrete graphics card.
78) and verify that HP Logo is presented
(4. Update BIOS and drivers
(9. Soft reset (Default Settings) on page
+ p for display switcher).
(11. Test with minimum configuration on page
Display on page 102 section.
79) if
80) by