# Arudino doesn't work after disconnecting the USB from the pc even with the code uploaded and the PSU connected

**URL:** <https://forum.arduino.cc/t/arudino-doesnt-work-after-disconnecting-the-usb-from-the-pc-even-with-the-code-uploaded-and-the-psu-connected/1128306>\
**Category:** General Guidance\
**Created:** [May 18, 2023, 9:01am UTC](https://forum.arduino.cc/t/arudino-doesnt-work-after-disconnecting-the-usb-from-the-pc-even-with-the-code-uploaded-and-the-psu-connected/1128306 "2023-05-18T09:01:23Z")\
**Posts on this page:** 1\
**Showing post:** 21

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**Author:** ![UKHeliBob](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/ukhelibob/32/215663_2.png) [@UKHeliBob](https://forum.arduino.cc/u/UKHeliBob)\
**Post date:** [May 18, 2023, 10:23am UTC](https://forum.arduino.cc/t/arudino-doesnt-work-after-disconnecting-the-usb-from-the-pc-even-with-the-code-uploaded-and-the-psu-connected/1128306/21 "2023-05-18T10:23:15Z")

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Solder the pins to the Nano and report back what happens when you try the sketch and the circuit

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