When I plug a removable storage device into a USB port the grahics card switches off and I have to reboot my PC. My BIOS firmware is up to date, all drivers are up to date, the PC is still running, other USB devices are plugged in and fine, and it doesn't matter if the removable storage is independently powered or not.
I have checked motherboard set-up and anti-virus but cannot find anything obvious. My Graphics card is a Radeon 9200 in the AGP slot.
I am running XP professional with Avast anti-virus and the internet comes through a Netgear 834 Modem to a Belkin wireless unit both have firewalls active. Windows firewall is off.
This is getting very frustrating.