I'm sorry about the issue. What's the upload button for? Is it for transferring photos from the camera to the computer? Or uploading your photos from camera to a website, etc.?
Did you see the upload button previously?
Was it working previously? Or is this the first time you are trying to upload?
What's the model of your camera?
Do you have windows xp, vista, or 7, or 8, 10, or mac computer?
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Is there any other model for your camera? What's the brand of the camera?
Can you press at the same time the two keys Windows and Pause on the keyboard, then tell me the Windows version it shows there?
Please reply at the box below. Thank you.