RE: My computer won’t power on
Thank you for your message.
Please disconnect the power cord & remove the battery, press & hold down the power button for 30 seconds as you did earlier.
Check if the light on the ac adapter is on when connected to the power source &check if the light on the adapter stays on when connected to the notebook.
What is the status of the light on the power button, if the light steady or blinking?
For my reference, please click on my Dell username & send a private message with the service tag, registered name & email address.