My Arduino Uno has been working for a while. but after a break it started giving me the error avrdude.exe: stk500_getsync(): not in sync: resp=0x00
when i shift click + the upload avrdude.exe: usbdev_open(): did not find any USB device "usb"
I have choosen the right board and port, it happens on two win7 pc's reinstalled updated and installed drivers with no luck, even tried the enhanced edition of the IDE
I treid loop-back but it doesnt echo anything out. My rx and tx lights are not blinking at all Its stuck running the old software i uploaded