I installed a new 250gig(3g/s) SATA HDD in my computer previously running off a 74 g SATA raptor. But the darn drive doesnt even show up in my computer. It shows up ok in the BIOS. Also in the device manager... but no trace of it in 'my computer'. I re-installed the SATA drivers. No change. Any clues... could the drive be dead? Please help?