HP Elite x2 G8 Maintenance And Service Manual page 99

Table 7-12 Issues, possible causes, and fixes
Items
Symptoms
No battery status light
●
Blinking amber (critically low
●
battery level)
No boot without AC adapter
●
Procedures
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
2. Soft reset (9. Soft reset (Default Settings) on page
Verify AC adapter
1. Determine whether the computer needs the AC adapter to boot and operate.
Sometimes, an intermittently bad AC adapter and loose connection between adapter
and computer results in inability to charge battery, which causes short run time.
2. Inspect AC adapter to verify that it is functioning.
3. Test with a working AC adapter and confirm whether battery is charging.
4. Be sure that battery is fully charged (AC adapter plugged in at least 2.5 hours).
Diagnostics: HP tools report results such as passed, calibrate, weak, replace, no battery, and
unknown, and they suggest corresponding actions.
Use HP Hardware Diagnostics (UEFI)
HP PC Hardware Diagnostics (UEFI) is a good tool to use to isolate and determine faulty
battery, especially for quickly discharging (short life) battery.
1. Verify that battery is recognized and charging.
2. Verify battery condition if battery cycle life is past its life expectancy (that is, past
1000-cycle life and 3-year warranty). Battery might need to be replaced.
3. If issue remains, test with a verified working battery and verify battery status lights and
battery conditions.
4. If issue remains, replace system board.
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(6. HP Hardware Diagnostics and Tools on page
Battery not recognized, not charging
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