Arduino won't upload to UNO or NANO all of the sudden

Arduino: 1.8.19 (Windows 10), Board: "Arduino Nano, ATmega328P"

Sketch uses 444 bytes (1%) of program storage space. Maximum is 30720 bytes.

Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.

C:\Users\ckemp\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17/bin/avrdude -CC:\Users\ckemp\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17/etc/avrdude.conf -v -patmega328p -carduino -PCOM6 -b115200 -D -Uflash:w:C:\Users\ckemp\AppData\Local\Temp\arduino_build_29162/sketch_aug15a.ino.hex:i

avrdude: Version 6.3-20190619

     Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/

     Copyright (c) 2007-2014 Joerg Wunsch



     System wide configuration file is "C:\Users\ckemp\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17/etc/avrdude.conf"

avrdude: can't open config file "C:\Users\ckemp\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17/etc/avrdude.conf": No such file or directory

avrdude: error reading system wide configuration file "C:\Users\ckemp\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17/etc/avrdude.conf"

avrdude: error reading system wide configuration file "C:\Users\ckemp\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17/etc/avrdude.conf"

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This problem originally started after my PC shut off unexpectantly while using Arduino plugged into my UNO. Ever since then, no matter what port I try (and correctly select), I can't upload anything to my UNO or NANO's now. I've tried restarting PC, holding down the resets on Arduinos, nothing works.

Hey, dont panic :slight_smile:
I would deinstall the used devices in devicemanager and simply reinstall the IDE

kind regards
finn

As mentioned above uninstall then reinstall by doing the following: