Dell Inspiron 15 boots for 2 seconds only

[OriginalKemics]

Hi guys,

Would really appreciate some guidance on how to trouble shoot my issue.

I have a Dell Inspirion 15 p40f which i believe is the 3000 series.

I've been away on holiday and now on return my laptop won't boot. It starts booting and then after 2-3 seconds completely turns off. Long before I can get into any set up/Bios.
I assumed it was a battery problem but tried charging (2 different chargers) and with and without battery plugged in. Always the same problem, starts booting and the completely died within 2 seconds. I have no idea what to try now as I can't get it to stay on longer than those first few seconds.

Would massively appreciate any help

Thank you!

 

[Laptop_Nerd]

Hi,

Please do try these troubleshooting steps that may help.
- Start by doing a hard reboot, remove the battery and unplug the AC adapter then press and hold the power button for 20 seconds then try booting it up again.
- If this will not work, do test the AC adapter if it's working properly. Remove the battery and power the laptop with just the AC adapter connected and see if it will boot up or not. do also try a different AC adapter that has the same voltage and see if it will work or not.
- Proceed with reseating the RAM's if trying a different AC adapter will not work, remove them all for couple of seconds then put them back in making sure everything is seated properly.
- If it will still not work, connect an external monitor and see if you'll get any display from it. If there's a display on the external monitor that could mean that the problem is the built in display.
- But if there's still no display on the external monitor that means the problem lies in the motherboard.