Certain Inspiron Systems Require the AC Adapter Attached to Run LCD Built-In Self Test
Summary: This article provides information about certain Inspiron laptops not being able to run the LCD built-in self test (BIST) unless the AC adapter is connected.
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This article is not tied to any specific product.
Not all product versions are identified in this article.
Symptoms
Symptom
Select Dell Inspiron laptops will not enter the LCD built-in self test (BIST) diagnostics when using the D and Power button key combination. On these laptops, the AC adapter must be connected to start the LCD BIST.
Affected systems
- Inspiron 5481 2-in-1
- Inspiron 5482 2-in-1
- Inspiron 5490
- Inspiron 5491
- Inspiron 5591
- Inspiron 7380
- Inspiron 7580
- Inspiron 7386 2-in-1
- Inspiron 7586 2-in-1
- Inspiron 7786 2-in-1
- Inspiron 7390 2-in-1
- Inspiron 7391
- Inspiron 7590
- Inspiron 7591
- Inspiron 7791 2-in-1
Cause
No cause information
Resolution
Solution
The laptop is working as designed. Connect the AC adapter to the laptop and then use the D and Power button key combination to start the LCD BIST diagnostics.
Affected Products
Inspiron 7380, Inspiron 7386 2-in-1, Inspiron 7390 2-in-1, Inspiron 7391, Inspiron 5481 2-in-1, Inspiron 5482 2-in-1, Inspiron 5490, Inspiron 7580, Inspiron 7586 2-in-1, Inspiron 7590, Inspiron 7591, Inspiron 7786 2-in-1, Inspiron 7791 2-in-1
, Latitude 5491, Latitude 5591
...
Article Properties
Article Number: 000156284
Article Type: Solution
Last Modified: 15 Apr 2025
Version: 6
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