Help with audio,wifi and battery issue for 3420

[yuviuv46]

Dell inspiron 3420 came in for service
When i switched from ata to ahci the bios bricked and power on no display issue was there.I successfully managed to flash bios with external programmer now the display is ok when i upgraded from 7 to windows 10 os.it gets locked automatically.When i remove the battery the issue is gone btw the battery is in pluged in not charging no wifi sound working up.I have installed all the compatible drivers still no success any help would be great!!!

[mon2]

Re: Help with audio,wifi and battery issue for 3420

Is the proper power adapter being used? Dell will use the PS_ID single wire communication to ping if the external power adapter is the proper rated adapter to power and charge the logic board.

Any complaints from the power on cycle about the power adapter?

[yuviuv46]

Re: Help with audio,wifi and battery issue for 3420

Yes the charger is of 65w wheareas on the system startup 90w is recommended.the charger what is being used came with the laptop itself.