Problem uploading to board. tendra

Development Tools IDE 1.x
1

Arduino: 1.8.8 (Windows 8), Board: "Arduino Nano, ATmega328P"

Build options changed, rebuilding all
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.
avrdude: ser_open(): can't open device "\.\COM24": The system cannot find the file specified.

Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

2

Please dont just jump into other peoples post unless yours is an identical issue it is bad manners.
Split your post to this one.

As it looks like a NANO did you select the correct flavour or (old bootloader) in the IDE ?