please help javascript:void(0);

avrdude: ser_open(): can't open device "\.\COM1": Det går inte att hitta filen.

processing.app.debug.RunnerException
at cc.arduino.packages.uploaders.SerialUploader.uploadUsingPreferences(SerialUploader.java:129)
at processing.app.Sketch.upload(Sketch.java:1692)
at processing.app.Sketch.exportApplet(Sketch.java:1605)
at processing.app.Sketch.exportApplet(Sketch.java:1577)
at processing.app.Editor$DefaultExportHandler.run(Editor.java:2397)
at java.lang.Thread.run(Thread.java:619)
Caused by: processing.app.debug.RunnerException: Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.
at cc.arduino.packages.Uploader.executeUploadCommand(Uploader.java:113)
at cc.arduino.packages.uploaders.SerialUploader.uploadUsingPreferences(SerialUploader.java:127)
... 5 more
:~