Can't upload to Mega 2560

I installed the Arduino Software.
Now I can upload software to my UNO,
but I can't upload software to my Mega 2560.
Windows don't recognize a new Device.

me to friend
its appear to be public issue
i tried many thing and also use xp and win 7 but nothing help

USB 2.0 serial drivers missing



Can you tell me what, if anything , is appearing inside the Device Manager when you connect the board to your computer. The device will usually be added either below "Ports - COM and LPT" or "Other Devices".


What usb-serial chip is being used by your board? Have a look at the chip that is closest to your USB port and let me know what is written on it.

Provide me with this information and I will do my best to help you both.