Xbox one strange beep and turn off

Hi so I have an xbox one S. It was working all ok yesterday but today it wont display anything on the screen. When we turn it on the first boot beep sounds and the light turns on but then a different type of beep happens sort of like you find in a bios it beeps like that for like 2 minutes then shuts off. Another thing I noticed was that previously a red light would show in one of the back ports now it doesn’t show. The only thing I could think of to be cause would be that my brother unplugged the extension cord during the night and I set the settings so it would never actually turn off, I asked support and they said it could be the power supply but the weird thing is the fan works it blows at a reasonable speed and it stays on for a bit just the display never shows up and the strange beeps keep happening. Disc eject and insertion works but no controller connects and the pair button doesn’t do anything either.