GA-7N400PRO2 - AthlonXP Mobo - CD/network/Restart Issue

[roley]

I have built a computer based on the Gigabyte GA-7N400PRO2 Mobo.

I have also established an ADSL line with Netgear modem.

The mobo has two DVD drives and onboard GLAN.

When the Ethernet cable is plugged in, if I then insert a CD into either drive it causes WinXP Home to launch a fault and restart.

If I leave the CD in the drive, as it reboots into Windows it detects something and then restarts.

If I unplug the Ethernet, the computer works fine...

Now, has anyone experienced this problem before? And are there any solutions or ideas?

Thx

Rohan