Callum898
1 Copper

Laptop not powering on

I press the power button on my school laptop latitude 3340, the fan runs than stops suddenly but the light on top of the computer flashes on and off, and wifi and battery buttons flash which are placed next to the keyboard I've tried the take battery and charger out and hold power button for 20 seconds but still doesn't work. How do I fix it, it's done it before and I don't know how I fixed it but it started working again suddenly
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3 Replies
LSUFAN51
5 Rhenium

RE: Laptop not powering on

I'd suggest you run diagnostic tool on the system. It will scan for any possible hardware issue that might be causing the system to act up

1. Power off system

2. Power on system, quickly start tapping F12 key continuously. You should be diagnostic screen. After quick tests, run full tests as well. Please report back any error code.

www.youtube.com/watch

LSUFAN51
5 Rhenium

RE: Laptop not powering on

" but the light on top of the computer flashes on and off, and wifi and battery buttons flash which are placed next to the keyboard"

Dell Latitude 3440 Owner's Manual - Page 50

optinethawaii.com/.../Dell-Latitude-3440-Owners-Manual.pdf

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Moderator
Moderator

RE: Laptop not powering on

Hi CALLUM898,

The HDD, battery and wireless led also serve as diagnostic leds. A particular pattern helps isolate the source of the issue.

You have specified that the battery and wireless leds are flashing / blinking. What is the status of HDD led?

Possible scenarios:

  1. If all 3 leds are blinking = motherboard failure
  2. If HDD solid/stable - other 2 blinking = memory not detected

If its option 2, then download the service manual - link provided by other user - and remove and reseat the memory modules and test the system - if required - test each module in each slot. This will help isolate the faulty memory module. If nothing works, then the motherboard needs to be replaced.

Also, please click my DELL-username and write me a private conversation with the service tag and your contact details(Name and Email) for case records.

Let us know if you have any other queries.

 

Thanks and Regards,
DELL-Rishi
Social Media and Communities Professional
#IWork4Dell
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