Upload okay but nothing is happening

Projects Programming
9

I get this message when no board is connected after upload

Binary sketch size: 1,084 bytes (of a 32,256 byte maximum)
processing.app.SerialNotFoundException: Serial port 'COM5' not found. Did you select the right one from the Tools > Serial Port menu?
	at processing.app.Serial.<init>(Serial.java:191)
	at processing.app.Serial.<init>(Serial.java:77)
	at processing.app.debug.Uploader.flushSerialBuffer(Uploader.java:77)
	at processing.app.debug.AvrdudeUploader.uploadViaBootloader(AvrdudeUploader.java:172)
	at processing.app.debug.AvrdudeUploader.uploadUsingPreferences(AvrdudeUploader.java:67)
	at processing.app.Sketch.upload(Sketch.java:1706)
	at processing.app.Sketch.exportApplet(Sketch.java:1662)
	at processing.app.Sketch.exportApplet(Sketch.java:1634)
	at processing.app.Editor$DefaultExportHandler.run(Editor.java:2346)
	at java.lang.Thread.run(Thread.java:619)

Sorry for the confusion. I had initial troubles with windows detecting the uno. I read somewhere, on this forum or another
to download the self executable which has the USB drivers built in. The file is: setup_Arduino_ERW_1.0.1f_20120912.exe
After install, it detects the uno at least.

If i use the ERW IDE, I don't get the red communication error message, only in the standard IDE.

I got it from ebay.

Thanks