Thanks for using JustAnswer. This is Leela and I will help you with the question today.
Can you please let me know if you could POWER DOWN the computer by removing the battery and try to put the battery back and see if the problem still exists? Please make sure to SAVE all your work before you try removing the battery.
OK.. thanks for confirming.
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I guess it must be a HARDWARE or DRIVER problem. Can you please remove POWER CORD, BATTERY of the laptop and try to see if the POWER KEYS are pressed by any chance. Try to check if any KEY got pressed and try to release it.
Please let me know how things go.
Thanks for the update.
Did you check ALL Keys or just the Power button?
Also one more thing.. Is the device connected via LAN or WIFI?
If it is connected via LAN there is a chance that it can be AWAKEN via LAN and we can disable that.
Please let me know.
Thanks for the confirmation.
The important thing left is BIOS update.
Did you try to update BIOS on the computer recently? Also from when you are facing this problem?
OK. Did you get Windows 8.1 or Windows 7 along with the purchase?
Ok. I guess you didnt have any problem with Windows 8.1. Can you confirm?
As your BIOS is upto date and you didnt have problem with Windows 8.1, I think problem may be with Windows 10 OR with your mother board.
Do you want to try going back to Windows 8.1, by trying System recovery? If you are keep to run Windows 10 only and not want to go back to 8.1, you would need to visit the store where you bought the computer or call Dell.
If you go to service center also they may first try to recover machine to Windows 8.1 and do their debugging of the problem.