It sounds like your old drive is IDE and your PC is using SATA ? You need to confirm that your motherboard supports IDE ? There will be a slot marked IDE on the motherboard, all you will need is a cable and the old style four pin power connector which may still be bundeled in the Power supply loom. If you find there is no IDE slot on the board, you have some options, buy an internal SATA drive or buy a USB hard disk to use externally. Hope that helps.