I reinstalled everything and went through all the steps. everything works fine now. Dont know but i think i might have forgot to choose the uno board in the tools menu. Thank you for your suggestions and help, I appreciate it.
Usb powers up arduino uno but cannot upload. "com port 3 already in use" is displayed when i try to upload. Im having this problem on my new laptop, everything works fine on my desktop. Desktop running XP Laptop running WIN 7 Any help would be great, thanks.