Latitude 3350 not turning on-when the power button is pressed, the power light turns on for a fraction of a second, and then the battery light flashes, alternating three flashes of yellow and white. I've tried disconnecting the battery and plug and holding the button for 30 seconds, but nothing changed.
Problem: Laptop refused to boot ,lights turns off after 3-5 seconds after powering on..(with or without the charger),i knew somethings off so googled it & here ,fixed it under 10 minutes..thankyou..all i can think of the culprit being was a battery drain issue,that it somehow mess with the bios,just glad it worked cause for a sec, i was really ready to give it up
@U2CAMEB4ME 2nd method worked for me,my sysmptoms,3 second power switch light then failed boot(no screen backlight),1st thing I noticed is my wifi wasn't working then after I decided a restart then it happened,glad I found this solution again,this is the second time it happened,glad I found your solution solution ,:)
U2CAMEB4ME
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Posted May 31st, 2021 08:00
Welcome to the Dell Community.
Hold down the "D" key, push the power button, release the power button, wait 2-3 seconds and release the "D" key
The laptop should go through an LCD test of solid White, Red, Green, Blue and Black 2 or 3 times.
After completion it should try to automatically boot 2 or 3 times.
If it does not boot, then the next thing would be to disconnect the BIOS/CMOS battery.
https://www.dell.com/support/manuals/en-us/latitude-3350-laptop/delllat3350_om/removing-the-coin-cell-battery?guid=guid-3acfe630-6804-41e7-bb75-f9abd0822ca2&lang=en-us
Disconnect the AC adapter and remove/disconnect the “Main” battery.
Disconnect the “Coin-Cell” battery.
Connect ONLY the AC adapter for 3-5 seconds.
Then disconnect the AC adapter.
Connect the “Coin-Cell and Main” batteries ONLY.
Turn the laptop over and open the lid.
NOW connect the AC adapter.
It should try to automatically boot 2-3 times.
Post your results.
Best regards,
U2