Dell Inspiron N5010 -No response - Continuous hamming (not beep) when plugged to power


Feb 21, 2016

-My Dell Inspiron N5010 doesn't respond and makes continuous humming (not beep) when plugged to the charger.
-I tried most of common tricks (Charger is Okay, battery removed and returned after pressing power button for 30sec ..etc)
-sound still even after unplugged everything except (motherboard+power board+ram) as shown in the photo

sound and photo are in this link:
note: sound is amplified when recorded by phone.. in reality it is less loud (quiet)
Thank you for your help.

Please do try these troubleshooting steps that may help in solving the issue.

- Start with a hard reboot, unplug it's AC adapter then press and hold the power button for 20 seconds then try booting it.
- If it doesn't work reseat the RAM, remove them all for couple of second then put them back in making sure everything is seated properly.
- Again if these doesn't work but you can hear the laptop on but with no display, connect an external monitor and see if it would display anything because if it does that means it's the built in display that is faulty.
- Next to try is if your AC adapter is still okay by trying another AC adapter that has the same voltage and see if it would work.
- If all these will not work it would be a motherboard problem.