Dell Latitude 7490 Not Turning On | Fix Black Screen, No Power, No Lights (Step-by-Step)
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Is your Dell Latitude 7490 not turning on?
In this step-by-step tutorial, I’ll show you how to fix Dell laptops that won’t power on — even when the screen stays black and no lights show up.
We’ll go through simple but effective solutions that you can do at home without any special tools.
In this video, you’ll learn:
How to drain the power and perform a power reset (press and hold power button 30 seconds)
What to do if the battery is not charging
How to check your charger and power adapter using a multimeter
Signs of a faulty battery or damaged charging port
What to look for when your Dell Latitude shows no light or logo
How to tell if it’s a motherboard, RAM, or power issue
Tools Used:
Dell Original Power Adapter
Multimeter for voltage testing
Phillips screwdriver (optional for battery removal)
Applies to Similar Models:
Dell Latitude 7490, 7480, 7390, 5490, 5420, 7420, and other Dell Latitude 5000 / 7000 Series laptops.
(Source: YouTube Channel Smart Devices Channel)
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