Start my PC without a keyboard

Well, at first glance, I would say to dip it in very salty water, but if you want it to survive, you'll need to open it.

In any case, I would wait for someone else's opinion before doing that.

Otherwise, there’s another way: you need to know your PC's IP address and its MAC address, then connect it with a cable to the internet and use Wake on LAN software to power it on remotely. Hopefully, the motherboard accepts it.

Yes, no, I don't know the MAC address, I should be able to find it, but the IP address... unless there's a way to find it remotely.

Yes, well, I don't think I'll try that :p

Oh well, we're getting closer to our goal!
However, you will only start it, for the rest it's not my problem^^

Finally, the interest is quite limited since the PC probably won't work very well afterward :D

Walking, I wouldn't say, but swimming for sure HAHAHAH.