A Dell XPS 14 9440 that will not start, shows no light or powers on and then dies has a short ladder of checks, and each rung tells you something. This premium 14-inch laptop has a soldered battery, USB-C charging and an edge-to-edge design with a power button that doubles as a fingerprint reader on some models. Because the battery is inside and the ports are USB-C, a no-start is often a charging problem, a stuck power state or a power-delivery mismatch, and not a failed motherboard.
The checks in more detail
Start with power. Plug in the original Dell USB-C charger, or a charger of similar wattage, and leave the laptop to charge for 30 minutes, since a deeply discharged battery may show nothing for a while. Look at the small battery light on the front edge or the charging port: a steady white or a blinking pattern with amber and white codes tells you about the state of the charger or the battery, which Dell's guide lists.
Try a different wall outlet and a different charger, and try the other USB-C port, since a faulty port or a charger that does not negotiate the right voltage can fail to charge. Remove any dock or USB devices. Then a hard reset, which drains the stored power: unplug everything, hold the power button for 15 to 20 seconds, release it, plug in the charger and press the power button.
Next test the screen: shine a flashlight at the display to see a faint image, and connect an external monitor, because a laptop that runs with a black screen is a display issue. If the laptop switches on but does not boot, start the Dell diagnostics by holding D, or tapping F12 and choosing Diagnostics at power-on, and note the error code. If a code appears, or no light ever appears after charging and a hard reset, the battery or the board needs a Dell technician; quote the service tag from the underside.
Differential
Likely causes of “Dell XPS 14 9440 will not turn on or start”, and how to tell them apart
- 1
A discharged battery
What separates it Nothing for a while after plugging in
How to confirm Charge for 30 minutes
- 2
A charger or port not negotiating
What separates it The battery light does not respond
How to confirm Try another charger and port
- 3
A stuck power state
What separates it Lights flicker and it will not boot
How to confirm Do a hard reset
- 4
A display problem
What separates it The fans run but the screen is black
How to confirm Test with an external monitor
- 5
A battery or board failure
What separates it Nothing responds after a reset
How to confirm Dell service
Before you touch a setting
Record this first — changing settings destroys the evidence
- What the battery light does
- Whether the fans or lights come on
- Whether an external monitor shows a picture
- The service tag
Try in this order
0 of 6 completedCharge for 30 minutes
ReversibleWith the original charger.
Read the battery light
ReversibleAgainst Dell's guide.
Try another charger and port
ReversibleRemove docks.
Do a hard reset
ReversibleHold power 15 to 20 seconds.
Test an external monitor
ReversibleFor a black screen.
Run the diagnostics
ReversibleHold D or tap F12.
Model-specific
What is true of this model and not of its siblings
- A soldered battery
- It cannot be removed, so a hard reset drains the power state.
- USB-C charging
- A charger must negotiate the right voltage.
- The battery light
- Its pattern is a diagnostic code.
- Diagnostics
- The BIOS can test hardware.
- A black screen
- It may be the display, not the computer.
- Dell help
- Quote the service tag.
Stop boundary
When this stops being a self-service repair
- !Do not open the case yourself
- !Use only a Dell or compatible USB-C charger
- !Contact Dell if the laptop swells or heats while charging
Evidence ledger
Sources behind this answer
Exact questions
Common questions
Why will my XPS 14 not start?+
Charging, a stuck power state, the display or the battery.
How do I hard reset it?+
Unplug everything and hold the power button for 15 to 20 seconds.
How do I run Dell diagnostics?+
Hold D or tap F12 at power-on.
Does the battery light help?+
Yes, its pattern is a code.
Can the charger be the problem?+
Yes.
Where is the service tag?+
On the underside.