Mega 2560 unresponsive

I can't do anything with this!
Using Win XP -
I've installed, it's visible on Com3, the Blink program won't compile -
so tried burning the bootloader - I keep getting 10 attempts, with message "Not in synch"
The 2560 is correctly selected -
Using Windows 7 on a different PC -
My Norton Antivirus says it's dangerous & removes the IDE!

This is looking like a big hoax to me.
Has anyone got this unit to work?
It is the standard Mega 2560, out of the box . . .

In neither case could I get the TX/RX leds blinking - It just won't communicate.

This is looking like a big hoax to me.

I agree, Windows is the biggest hoax of them all. They try to pass it off as an operating system.

I've installed, it's visible on Com3, the Blink program won't compile

In which case the IDE is not installed correctly.

But if it won’t compile you will never get to the bit where it says not in sync, so your tale doesn’t add up at the moment.

It is the standard Mega 2560, out of the box .

So not a clone then?

so tried burning the bootloader

How? You need a programmer or an other Arduino to act as a programmer to do this.