Live CD won't boot on IBM M52
I have just tried to load Ubuntu 11.04 live CD (DVD) onto an IBM M52/MMC/8214.
I bought the M52 to replace an older PC, which loaded the DVD without problem, so there is no problem with the DVD.
The M52 works fine with Windows. Following is what happens when I try to load the DVD:
...finds Mac address
...sits on DHCP.../ for a couple of minutes
...PXE-E53: No boot filename received
PXE-M0F: Exiting Intel Boot Agent
1962: No operating system found.
It then boots into Windows.
I'm not entirely new to Linux, having played with Ubuntu for a while, but have never had a problem. Now, I'm stuck! Any suggestions please?