Suddenly unable to upload to esp32 using Arduino ide

[funkypeppa]

Just got a set of two new esp32s. Once I got the correct drivers install so my computer could detect the esp32 it worked perfect. Suddenly today when I attempt to upload to them they don't seem to work. I hold down the boot button at the correct time and have changed nothing that I can remember from before. they also seem to get really hot very fast when plugged in by usb.
when I try to upload I have even made sure nothing is connected, just the board and the usb.
this happens to both esp32s not just one of them.

this is the esp32:

KeeYees Development Board 2.4 GHz Dual Core WLAN WiFi + Bluetooth 2-in-1...

I am using the esp32 Board on Arduino ide 2.1.1 using this link in the preferences tab:

http://arduino.esp8266.com/stable/package_esp8266com_index.json,https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json

this is the message printed in the Output tab when I try to upload:

Sketch uses 707445 bytes (53%) of program storage space. Maximum is 1310720 bytes.
Global variables use 42780 bytes (13%) of dynamic memory, leaving 284900 bytes for local variables. Maximum is 327680 bytes.
esptool.py v4.5.1
Serial port COM4
Connecting...................................... (I hold down boot button here)

A fatal error occurred: Failed to connect to ESP32: No serial data received.
For troubleshooting steps visit: Troubleshooting - ESP32 - — esptool.py latest documentation
Failed uploading: uploading error: exit status 2

Any ideas on whats going on here?

[pylon]

Did you connect some other circuitry to both boards? My wild guess is that you had an error in the setup you connected to the boards and both are fried now. That would explain why the USB2Serial chip is still showing up on your PC but there is no reaction on the upload command.

[funkypeppa]

Yes, I did connect the boards to some circuitry. It was very simple but I guess this could have somehow caused the problem, I will just buy new ones, Thanks.