# Pixhawk 4 unable to connect to QGC in USB

**URL:** <https://discuss.px4.io/t/pixhawk-4-unable-to-connect-to-qgc-in-usb/14760>\
**Category:** Uncategorized\
**Created:** [January 20, 2020, 6:12am UTC](https://discuss.px4.io/t/pixhawk-4-unable-to-connect-to-qgc-in-usb/14760 "2020-01-20T06:12:57Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Kazel\_Koh](https://discuss.px4.io/user_avatar/discuss.px4.io/kazel_koh/32/5286_2.png) [@Kazel\_Koh](https://discuss.px4.io/u/Kazel_Koh)\
**Post date:** [January 20, 2020, 6:12am UTC](https://discuss.px4.io/t/pixhawk-4-unable-to-connect-to-qgc-in-usb/14760/1 "2020-01-20T06:12:57Z")

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Hi, i attempted an I/O reset with the pixhawk 4, and now there’s a steady red led on the B/E light, with green PWR and blue ACT.  
The pixhawk now cannot connect to Qgroundcontrol at all, with the PC not sensing the pixhawk.  
The pixhawk also heats up very fast when connected with USB.  
Any advice on what to do?