I purchased a san disk cruzer 1.0 gb. It works fine on my wife's computer but my computer will not recognize it. When I plug into the USB slot the unit lites up but when I go to "my computer" there is nothing showing at all and the screen is frozen. If I put the unit in when I have my computer on the sreen it will not show that the cruzer is plugged in. I hope I am clear enough. Any thoughts on why it does not boot up in my computer and does so in my wife"s. Thank you