I need help with my pc please

the worst case scenario is that it blew because of a power surge and may have burned up components like the power supply

you have power coming out of the plug since the keyboard lights up

it's POSSIBLE that the internal circuit breakers are overloaded. unplug everything and give it 30 minutes and try it again - don't unplug your keyboard etc. just unplug everything from the mains/plugs (whichever they call it in your country)

then try it again and let us know what happens.

You may need to replace all of those. It sounds like they were damaged in the surge. If you have any sort of computer repair place near you, you can take them in and have them look at the parts, but it's unlikely they can be fixed.

And when you replace them, also invest in an uninterruptible power supply with a built-in surge protector.

https://www.amazon.com/s?k=uninterruptible+power+supply&crid=1T33017P7MML2&sprefix=unin%2Caps%2C103&ref=nb_sb_ss_ts-doa-p_2_4

Too many possibilities to diagnose this! Check all connections, remove as many peripherals as you can, and if you're proficient in doing so, as many removable internal components as you can one at a time and hope it's not the motherboard or data drive that's broken. Initially check it's not a faulty power supply unit by swapping it out for one that you know works.

Shut everything down and unplug everything. Then reconnect and restart each component one thing at a time.

Sounds like a power issue, so note what happens for each component when plugged in and restarted, then come back and tell us what happened.

In all honesty, it could be a number of things and might be hard to pin down from a distance.

Side note for all - nowadays it is relatively inexpensive to install whole house electrical surge protection. Well worth the cost. If you have the moxy and skills, plus space in your breaker box, you can do it yourself, if not and if you want to be safe, an electrician can quickly do it at a reasonable cost.

Your keyboard turns on? As it has lighting in the back that makes the keys visible?

Also what do you mean by your controllers won't turn on?

USB has separate channels for power and data. If by controllers turning on, you mean they have some LEDs, etc, then they may be working, but seeing that you the monitor is dead (is this is a laptop or a separate PC with a monitor attached?)