HP Elite Dragonfly 13.5 Maintenance and Service Guide - Page 87

Battery not recognized, not charging, Use this information to troubleshoot battery issues.,

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Table 6-11 Issues, possible causes, and fixes (continued) Solution 5. Inspect the power port on computer side for any damage, dust, debris. 6. Check power light (7. Status lights, blinking light codes, troubleshooting lights, and POST error messages on page 65). Rear power light indicates that external power to the computer is good. 7. If there is still no rear power light or no boot, replace the AC adapter. Tips The HP Smart AC adapter has a special pin in the middle, called the ID pin, for power rating and throttling. If this pin is broken, the rear power light turns on, but the power button and front power lights blink continuously, and the computer does not turn on. Third-party AC adapters do not work with the computer. Use the AC adapter that came with the computer for better performance. Battery not recognized, not charging Use this information to troubleshoot battery issues. Table 6-12 Issues, possible causes, and fixes Items Procedures Symptoms ● No battery status light ● Blinking amber (critically low battery level) ● No boot without AC adapter Possible causes Defective AC adapter , battery, or both. NOTE: Before proceeding, verify that the computer can boot to BIOS or Windows with a good AC adapter. Troubleshooting steps Visual inspections 1. Inspect battery connectors for any signs of damage. 2. Verify that battery is installed properly in battery bay without gap or obstructions and latch locks are tight. Reseat battery (for models with removable batteries). 3. Determine whether battery gets hot (batteries heat up when charging, but not too hot to touch). Check battery warranty to see whether the battery is new or its warranty is expired. Battery capacity degrades over time. Verify front battery status light 1. Battery status light is off: battery not recognized. 2. Battery status light is blinking amber: critically low battery level. Reset 1. Hard reset (8. Hard reset on page 68) 2. Soft reset (9. Soft reset (Default Settings) on page 69) Verify AC adapter 78 Chapter 6 Troubleshooting guide

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Table 6-11
Issues, possible causes, and fixes
(continued)
Solution
5.
Inspect the power port on computer side for any damage, dust, debris.
6.
Check power light (
7. Status lights, blinking light codes, troubleshooting lights,
and POST error messages
on page
65
). Rear power light indicates that external
power to the computer is good.
7.
If there is still no rear power light or no boot, replace the AC adapter.
Tips
The HP Smart AC adapter has a special pin in the middle, called the ID pin, for power
rating and throttling. If this pin is broken, the rear power light turns on, but the power
button and front power lights blink continuously, and the computer does not turn on.
Third-party AC adapters do not work with the computer.
Use the AC adapter that came with the computer for better performance.
Battery not recognized, not charging
Use this information to troubleshoot battery issues.
Table 6-12
Issues, possible causes, and fixes
Items
Procedures
Symptoms
●
No battery status light
●
Blinking amber (critically low
battery level)
●
No boot without AC adapter
Possible causes
Defective AC adapter , battery, or both.
NOTE:
Before proceeding, verify that the computer can boot to BIOS or Windows with a
good AC adapter.
Troubleshooting steps
Visual inspections
1.
Inspect battery connectors for any signs of damage.
2.
Verify that battery is installed properly in battery bay without gap or obstructions and
latch locks are tight. Reseat battery (for models with removable batteries).
3.
Determine whether battery gets hot (batteries heat up when charging, but not too hot
to touch).
Check battery warranty
to see whether the battery is new or its warranty is expired. Battery
capacity degrades over time.
Verify front battery status light
1.
Battery status light is off: battery not recognized.
2.
Battery status light is blinking amber: critically low battery level.
Reset
1.
Hard reset (
8. Hard reset
on page
68
)
2.
Soft reset (
9. Soft reset (Default Settings)
on page
69
)
Verify AC adapter
78
Chapter 6
Troubleshooting guide