UNO Comminacation Problem

Hi Guys
I bought a couple new UNO boards and I am not able to load a sketch to them. I have other Uno boards and am able to load sketches to all of them. Yes I am selecting the right board and Com Port. When I plug the USB cable in my lap top running Windows Vista beeps and shows a USB device at Port 16 as USB-Serial CH 340 . I did an echo test and that showed communication. The I/O leds on the UNO board blink when I try and load a sketch but I get this error.

"Binary sketch size: 1,084 bytes (of a 32,256 byte maximum)
avrdude: Expected signature for ATMEGA328P is 1E 95 0F
Double check chip, or use -F to override this check. "

The board is UNO R3 ATmega328P ATmega16U2 Board

Not sure what is going on. Does anyone have any ideas for an old brain that is getting rattled ? :slight_smile:
Thanks GD

Check the chip - sounds like you may have Atmega328 vs Atmega328P.
There are work arounds available.

The chip is Atmega8A-PU. How can I find the work around ?
Thanks GD

How are they Unos if they have '8A chips?
Select a different board type then - Arduino NG or older with Atmega8.

I tried every board listed in the tools and didn't have any luck.

GD

I have a couple of Atmega328 chips that I bought. If I put one in this board I still can't program the board. I am guessing that the MCU firmware needs to be changed. Is there a place that I can find some information about doing this if this is what I need to do ?
Thanks GD