I have installed a seagate 7200.7 40Gb hard drive for a back-up (slave) drive, I have put in it the middle (grey plug) of the 80, 40 pins IDE cable, taken out the jumper so it runs as a slave. It registers with device manager and it is enabled, but it doesn't show up in the MY COMPUTER, so I cant open it and use it in anyway. Please help. 