Thank you for reaching out to us.
Please share some more details like what is the status of the power button and color.
Have you tried removing all the cables and re-seating checked on different power outlet.
Reply back with all the details you have.
Have you tried performing PSU BIST.
For me to better assist in troubleshooting, please click my DELL-username and send me a Private Message with the Dell Service Tag number and your email address.
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We have not heard from you in the last 24 hours. We hope the issue reported by you has been addressed to your satisfaction. The case number for the current issue you reported is 947176661. If the issue is still unresolved or you have any other queries, feel free to respond so that we can assist you further. We would keep the case In Progress for the next 24 hours before archiving the same.
Have a great day!