Pc Freeze, When Unplug Usb 2.0 Devices

I just bought a usb2. 0 pci card because i only had usb1. 0 in my pc. My mother board fully supports usb 2. 0 as i check on the manual! I installed the card in the pci slot and the drivers but as i unplug my pen drive the pc freezed !

I rebooted , all is fine until i hook up another usb device this time my blue tooth dongle. Tried a differrent pendrive and the same thing happened! I tried removing the card and drivers and reinstalling but the same thing happened! Im running windows xp pro sp2 with all the latest updates!

The strange thing is here! Im running another version of windows xp pro sp2 on the same machine. I booted on this version, installed the card and drivers and it worked fine! All the devices i plugged where found automatically and worked fine!

Whats can be wrong with my xp version that the usb 2. 0 is not working with ?

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