I own a Raspberry Pi Zero W since March. I used it about 2 month, I tried different stuff on it, and 1 month I let it. Today, when I wanted to start it again, I plugged in the micro USB, and it worked about 10 minutes, didn't toucht it tough. After 10 minutes, it just turned off. I wanted to unplug the micro USB and plug it again, but it was too hot and I've got a little burned. I let it for about 1 hour, reinstalled OS, tried again and it boots, but in 10 sec it just get too hot. After 1 minute it turned itself off. Tried 2 microSD, Raspbian Pixel and Lite. Even withouth microSD and powered it's getting hot. What can I do now?