My computer has been updated with the latest patches, drivers etc. but I cannot copy to any device that has usb 2.0 interface. I have a 30GB ipod, 2.5GB mp3 player, 500GB WDMybook External hard disk. All these devices use USB 2.0. I cannot copy a single file, regardless of the size or location to any of these devices. I can also confirm that ALL these devices work on another computer. Everytime i attempt to copy a file, thats the end of my windows session. shutdown is also not possible. I have to cut the power.

Unless you're using a powered USB hub, I suspect your power supply has a weak leg. Try swapping it out if you can. It usually takes more than three weeks to prepare a good impromptu speech. - Mark Twain

I am not using a USB Hub. What is a weak leg? My phone which works on USB 1.1, USB Joystick and USB Joypad all work fine from the same port.

A weak leg in this context would refer to a weak branch or bundle of wires coming from the power supply. Not physically weak, but weak in power output. Just out of curiosity, have any USB 2 devices ever worked on this port. I see you mention USB1.1's. Have you checked the BIOS to see if the high speed side of the USB bus is enabled there? It usually takes more than three weeks to prepare a good impromptu speech. - Mark Twain